Smoke Detector Audit Backend

Smoke Detector Audit Backend Template
Battery Replacement Logs and Site Test Maps

Q: What classes power the Smoke Detector Audit template?

The core model includes User, Site, Detector, BatteryLog, SensitivityTest, and MapPin. Those classes keep inspections tied to a location, a detector serial number, and the work that was done.

Q: How do I log a battery replacement for a detector?

Create a BatteryLog entry with the detector pointer, replacedAt date, batteryType, and technicianNote. Managers can later review the battery history for a specific Detector.serialNumber.

Q: How do sensitivity tests fit into the audit flow?

Use SensitivityTest to store testedAt, result, and optional readingValue for each detector. A failed result can trigger a follow-up visit at the related Site.

Q: How do real-time updates work for audit routes?

Subscribe to MapPin and SensitivityTest changes with Live Queries so the dashboard updates when a field worker finishes a site or changes a detector status.

Q: Can I cache sites and detectors offline?

Yes. Enable Local Datastore and pin Site and Detector results so a field worker can review addresses and serial numbers even when the signal drops.

Q: How do I initialize the SDK for this template in React?

Use the React quick start snippet to set the Back4app app keys, then query Site and Detector classes for the current audit list.

Q: When should I choose GraphQL over REST for smoke detector audits?

Choose GraphQL if your screen needs nested Site, Detector, and BatteryLog data in one request; use REST when you want direct class endpoints for simpler tools.

Q: Which mobile stacks work best with offline detector checks?

Flutter, React Native, Android, and iOS can pin Site, Detector, BatteryLog, and SensitivityTest data locally and sync the records after reconnecting.

Q: How do I prevent someone from editing another technician's battery log?

Use ACLs and Cloud Code so only the logged-in user who created a BatteryLog can update it, while managers retain review access.

Q: What happens when a detector fails sensitivity testing?

Mark the Detector.status as needs_attention, store a failed SensitivityTest result, and keep the next visit tied to the same Site so the crew knows where to return.

A production-ready smoke detector audit backend on Back4app with battery replacement logs, sensitivity tests, and map pins for inspection routes. Includes ER diagram, data dictionary, JSON schema, API playground, and an AI Agent prompt for fast setup.

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Audit Takeaways

This template gives you a smoke detector audit backend with battery replacement logs, sensitivity tests, and site maps so coordinators and field staff can track inspections with less manual work.

Battery replacement history — Record every `BatteryLog` entry with detector serial numbers, changed dates, and technician notes.
Sensitivity testing by detector — Store `SensitivityTest` results for each `Detector` so failed checks are easy to spot and follow up.
Map-ready site tracking — Use `Site` and `MapPin` records to place detectors on maps and plan field visits.

What Is the Smoke Detector Audit Template?

When smoke detector audit teams operate across sites, consistent taxonomy prevents “same problem, five different names” in the audit trail. The fix is operational, not motivational. Back4app keeps Site, Detector, BatteryLog, SensitivityTest, and MapPin timestamped and attributable — the baseline smoke detector audit teams need when scrutiny arrives. The schema covers User (username, email, password), Site (name, address, mapLocation), Detector (site, serialNumber, status), BatteryLog (detector, replacedAt, batteryType), SensitivityTest (detector, testedAt, result), and MapPin (site, latitude, longitude) with auth, reporting, and map-friendly records built in. Connect your frontend and start tracking audits faster.

Best for:

Smoke detector inspection appsBattery replacement log toolsSensitivity test trackingMap-based field audit systemsMaintenance coordinatorsOperations teams with recurring site visits

Smoke Detector Audit backend overview

Operators in smoke detector audit usually feel pain first in the handoffs: one team updates a sheet, another trusts a chat thread, and neither matches what the customer was told.

Whether you ship web or mobile, Site, Detector, and BatteryLog remain the backbone — this page is the quickest way to align stakeholders.

Core Smoke Detector Audit Features

Every technology card in this hub uses the same smoke detector audit schema with Site, Detector, BatteryLog, SensitivityTest, and MapPin.

Site register and map anchors

`Site` stores name, address, and mapLocation for each building or floor plan.

Detector inventory

`Detector` links serialNumber, status, and site.

Battery replacement logs

`BatteryLog` stores replacedAt, batteryType, and technicianNote.

Sensitivity test results

`SensitivityTest` records testedAt, result, and detector.

Map pin placement

`MapPin` uses latitude, longitude, and site.

Why Build Your Smoke Detector Audit Backend with Back4app?

Back4app gives you site, detector, and audit primitives so your team can focus on batteries, tests, and route planning instead of backend plumbing.

•Detector and site records in one place: The `Detector` class links to `Site`, so battery checks and sensitivity tests stay tied to the correct address and map pin.
•Battery log history that is easy to query: `BatteryLog` rows capture `replacedAt`, `batteryType`, and `technicianNote`, which helps managers review replacement work by detector or date.
•Live status for inspections and route changes: Use Live Queries for `SensitivityTest` and `MapPin` updates while keeping REST and GraphQL ready for web dashboards and mobile field tools.

Build the audit backend once, then reuse the same classes for route planning, inspection history, and follow-up work.

Core Benefits

A smoke detector audit backend that helps teams stay organized without losing the details that matter.

Faster field updates

Write `BatteryLog` and `SensitivityTest` entries as visits happen instead of waiting for a spreadsheet cleanup.

Clear detector history

Use `Detector.serialNumber` plus linked logs to review maintenance history for any unit.

Map-based planning

`Site.mapLocation` and `MapPin.latitude` / `MapPin.longitude` make route planning less guesswork.

Better follow-up on failed tests

A failed `SensitivityTest.result` can be filtered immediately so supervisors know which detector needs attention.

One backend for mobile and desktop

REST and GraphQL expose the same `Site`, `Detector`, and log data to every app that needs it.

Reusable setup for future audits

Add extra fields later, but keep the same core pattern around `BatteryLog` and `SensitivityTest`.

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Let the Back4app AI Agent scaffold your audit backend and generate battery logs, sensitivity tests, and map views from one prompt.

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Technical Stack

Everything included in this smoke detector audit backend template.

Frontend

13+ technologies

Backend

Back4app

Database

MongoDB

Auth

Built-in auth + sessions

API

REST and GraphQL

Realtime

Live Queries

Smoke Audit ER Diagram

Entity relationship model for the smoke detector audit backend schema.

ER Diagram

View diagram source

Mermaid

erDiagram
    Inspector ||--o{ Building : "primaryCoordinator"
    Inspector ||--o{ Audit : "inspector"
    Inspector ||--o{ BatteryReplacement : "replacedBy"
    Inspector ||--o{ SensitivityTest : "testedBy"
    Building ||--o{ Detector : "building"
    Building ||--o{ Audit : "building"
    Building ||--o{ SiteMap : "building"
    Detector ||--o{ BatteryReplacement : "detector"
    Detector ||--o{ SensitivityTest : "detector"

    Inspector {
        String objectId PK
        String username
        String email
        String password
        String role
        String phoneNumber
        Date createdAt
        Date updatedAt
    }

    Building {
        String objectId PK
        String buildingName
        String address
        String city
        String state
        Number latitude
        Number longitude
        String primaryCoordinatorId FK
        Date createdAt
        Date updatedAt
    }

    Detector {
        String objectId PK
        String buildingId FK
        String roomLabel
        String deviceId
        String modelNumber
        Number batteryLevel
        Date lastBatteryChangeAt
        String status
        Date createdAt
        Date updatedAt
    }

    Audit {
        String objectId PK
        String buildingId FK
        String inspectorId FK
        Date auditDate
        String overallStatus
        String notes
        Date createdAt
        Date updatedAt
    }

    BatteryReplacement {
        String objectId PK
        String detectorId FK
        String replacedById FK
        Date replacementDate
        String batteryType
        String oldBatteryCondition
        Date createdAt
        Date updatedAt
    }

    SensitivityTest {
        String objectId PK
        String detectorId FK
        String testedById FK
        Date testDate
        String testResult
        Number readingValue
        String notes
        Date createdAt
        Date updatedAt
    }

    SiteMap {
        String objectId PK
        String buildingId FK
        String mapName
        Number floorNumber
        String mapUrl
        String legendNotes
        Date createdAt
        Date updatedAt
    }

Audit Integration Flow

Typical runtime flow for auth, site lookup, battery logs, sensitivity tests, and map updates.

ER Diagram

View diagram source

Mermaid

sequenceDiagram
  participant Inspector
  participant App as Smoke Detector Audit App
  participant Back4app as Back4app Cloud

  Inspector->>App: Sign in
  App->>Back4app: POST /login
  Back4app-->>App: Session token

  Inspector->>App: Open building list
  App->>Back4app: GET /classes/Building?include=primaryCoordinator
  Back4app-->>App: Buildings and coordinators

  Inspector->>App: Review detector batteries
  App->>Back4app: GET /classes/Detector?include=building&order=-updatedAt
  Back4app-->>App: Detector battery levels and statuses

  Inspector->>App: Save a battery replacement or sensitivity test
  App->>Back4app: POST /classes/BatteryReplacement
  App->>Back4app: POST /classes/SensitivityTest
  Back4app-->>App: Saved audit trail records

  Inspector->>App: Load site maps for a building
  App->>Back4app: GET /classes/SiteMap?include=building
  Back4app-->>App: Floor plans and detector locations

Audit Data Dictionary

Full field-level reference for every class in the smoke detector audit schema.

Field	Type	Description	Required
objectId	String	Auto-generated unique identifier	Auto
username	String	Inspector login name
email	String	Inspector email address
password	String	Hashed password (write-only)
role	String	Role of the user (e.g., manager, coordinator, field_tech)
phoneNumber	String	Contact number for site coordination	—
createdAt	Date	Auto-generated creation timestamp	Auto
updatedAt	Date	Auto-generated last-update timestamp	Auto

8 fields in Inspector

Security and Permissions

How ACL and CLP strategy protects site records, detector histories, and audit logs.

Technician-owned audit entries

Only the user who created a `BatteryLog` or `SensitivityTest` entry should be able to edit or delete it.

Site-level read access

Limit `Site` and `Detector` visibility to assigned staff or manager roles when an audit route is shared.

Change control for detector status

Use Cloud Code to validate `Detector.status` transitions so failed tests or replacements are recorded cleanly.

Schema (JSON)

Raw JSON schema definition ready to copy into Back4app or use as implementation reference.

JSON

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{
  "classes": [
    {
      "className": "Inspector",
      "fields": {
        "objectId": {
          "type": "String",
          "required": false
        },
        "username": {
          "type": "String",
          "required": true
        },
        "email": {
          "type": "String",
          "required": true
        },
        "password": {
          "type": "String",
          "required": true
        },
        "role": {
          "type": "String",
          "required": true
        },
        "phoneNumber": {
          "type": "String",
          "required": false
        },
        "createdAt": {
          "type": "Date",
          "required": false
        },
        "updatedAt": {
          "type": "Date",
          "required": false
        }
      }
    },
    {
      "className": "Building",
      "fields": {
        "objectId": {
          "type": "String",
          "required": false
        },
        "buildingName": {
          "type": "String",
          "required": true
        },
        "address": {
          "type": "String",
          "required": true
        },
        "city": {
          "type": "String",
          "required": true
        },
        "state": {
          "type": "String",
          "required": true
        },
        "latitude": {
          "type": "Number",
          "required": false
        },
        "longitude": {
          "type": "Number",
          "required": false
        },
        "primaryCoordinator": {
          "type": "Pointer",
          "required": true,
          "targetClass": "Inspector"
        },
        "createdAt": {
          "type": "Date",
          "required": false
        },
        "updatedAt": {
          "type": "Date",
          "required": false
        }
      }
    },
    {
      "className": "Detector",
      "fields": {
        "objectId": {
          "type": "String",
          "required": false
        },
        "building": {
          "type": "Pointer",
          "required": true,
          "targetClass": "Building"
        },
        "roomLabel": {
          "type": "String",
          "required": true
        },
        "deviceId": {
          "type": "String",
          "required": true
        },
        "modelNumber": {
          "type": "String",
          "required": true
        },
        "batteryLevel": {
          "type": "Number",
          "required": false
        },
        "lastBatteryChangeAt": {
          "type": "Date",
          "required": false
        },
        "status": {
          "type": "String",
          "required": true
        },
        "createdAt": {
          "type": "Date",
          "required": false
        },
        "updatedAt": {
          "type": "Date",
          "required": false
        }
      }
    },
    {
      "className": "Audit",
      "fields": {
        "objectId": {
          "type": "String",
          "required": false
        },
        "building": {
          "type": "Pointer",
          "required": true,
          "targetClass": "Building"
        },
        "inspector": {
          "type": "Pointer",
          "required": true,
          "targetClass": "Inspector"
        },
        "auditDate": {
          "type": "Date",
          "required": true
        },
        "overallStatus": {
          "type": "String",
          "required": true
        },
        "notes": {
          "type": "String",
          "required": false
        },
        "createdAt": {
          "type": "Date",
          "required": false
        },
        "updatedAt": {
          "type": "Date",
          "required": false
        }
      }
    },
    {
      "className": "BatteryReplacement",
      "fields": {
        "objectId": {
          "type": "String",
          "required": false
        },
        "detector": {
          "type": "Pointer",
          "required": true,
          "targetClass": "Detector"
        },
        "replacedBy": {
          "type": "Pointer",
          "required": true,
          "targetClass": "Inspector"
        },
        "replacementDate": {
          "type": "Date",
          "required": true
        },
        "batteryType": {
          "type": "String",
          "required": true
        },
        "oldBatteryCondition": {
          "type": "String",
          "required": false
        },
        "createdAt": {
          "type": "Date",
          "required": false
        },
        "updatedAt": {
          "type": "Date",
          "required": false
        }
      }
    },
    {
      "className": "SensitivityTest",
      "fields": {
        "objectId": {
          "type": "String",
          "required": false
        },
        "detector": {
          "type": "Pointer",
          "required": true,
          "targetClass": "Detector"
        },
        "testedBy": {
          "type": "Pointer",
          "required": true,
          "targetClass": "Inspector"
        },
        "testDate": {
          "type": "Date",
          "required": true
        },
        "testResult": {
          "type": "String",
          "required": true
        },
        "readingValue": {
          "type": "Number",
          "required": false
        },
        "notes": {
          "type": "String",
          "required": false
        },
        "createdAt": {
          "type": "Date",
          "required": false
        },
        "updatedAt": {
          "type": "Date",
          "required": false
        }
      }
    },
    {
      "className": "SiteMap",
      "fields": {
        "objectId": {
          "type": "String",
          "required": false
        },
        "building": {
          "type": "Pointer",
          "required": true,
          "targetClass": "Building"
        },
        "mapName": {
          "type": "String",
          "required": true
        },
        "floorNumber": {
          "type": "Number",
          "required": false
        },
        "mapUrl": {
          "type": "String",
          "required": true
        },
        "legendNotes": {
          "type": "String",
          "required": false
        },
        "createdAt": {
          "type": "Date",
          "required": false
        },
        "updatedAt": {
          "type": "Date",
          "required": false
        }
      }
    }
  ]
}

Build with AI Agent

Use the Back4app AI Agent to generate a real smoke detector audit app from this template, including frontend, backend, auth, and battery, test, and map flows.

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Ready to build

Create a smoke detector audit app backend on Back4app with this exact schema and behavior.

Schema:
1. User (use Back4app built-in): username, email, password; objectId, createdAt, updatedAt (system).
2. Site: name (String, required), address (String, required), mapLocation (GeoPoint, required), notes (String); objectId, createdAt, updatedAt (system).
3. Detector: site (Pointer to Site, required), serialNumber (String, required, unique), status (String, required), modelName (String), lastBatteryChangeAt (Date); objectId, createdAt, updatedAt (system).
4. BatteryLog: detector (Pointer to Detector, required), replacedAt (Date, required), batteryType (String, required), technicianNote (String), replacedBy (Pointer to User); objectId, createdAt, updatedAt (system).
5. SensitivityTest: detector (Pointer to Detector, required), testedAt (Date, required), result (String, required), readingValue (Number), technicianNote (String); objectId, createdAt, updatedAt (system).
6. MapPin: site (Pointer to Site, required), latitude (Number, required), longitude (Number, required), label (String), routeOrder (Number); objectId, createdAt, updatedAt (system).

Security:
- Use ACL/CLP so technicians can write their own BatteryLog and SensitivityTest entries, while managers can review site and detector history.
- Use Cloud Code to validate detector status changes and require linked site data.

Auth:
- Sign-up, login, logout.

Behavior:
- List sites, show detectors by site, create battery replacement logs, submit sensitivity tests, and refresh map pins for the next route.

Deliver:
- Back4app app with schema, ACLs, CLPs; frontend for sites, detectors, battery logs, sensitivity tests, and map views.

Press the button below to open the Agent with this template prompt pre-filled.

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API Playground

Try REST and GraphQL endpoints against the smoke detector audit schema. Responses use mock data and do not require a Back4app account.

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Uses the same schema as this template.

Choose Your Technology

Expand each card to see how to integrate Site, Detector, and BatteryLog with your chosen stack.

What You Get with Every Technology

Every stack uses the same smoke detector audit backend schema and API contracts.

Unified audit data structure

Manage sites, detectors, battery logs, sensitivity tests, and map pins with a consistent schema.

Battery replacement logs for field teams

Track each battery change with a timestamp, detector pointer, and technician note.

Sensitivity test tracking for compliance checks

Record pass or fail results by detector so follow-up work is obvious.

Map-aware site planning

Use site coordinates and pin records to plan routes and reduce missed inspections.

REST/GraphQL APIs for audit apps

Integrate web, mobile, and internal tools through one backend contract.

Smoke Audit Tech Comparison

Compare setup speed, SDK style, and AI support across all supported technologies.

Framework	Setup Time	Audit Benefit	SDK Type	AI Support
Flutter	About 5 min	Single codebase for field audits on mobile and web.	Typed SDK	Full
React	Under 5 minutes	Fast web dashboard for detector history.	Typed SDK	Full
React Native	~3–7 min	Cross-platform mobile app for battery logs.	Typed SDK	Full
Next.js	Rapid (5 min) setup	Server-rendered site map and audit dashboard.	Typed SDK	Full
JavaScript	~3–5 min	Lightweight browser integration for inspection forms.	Typed SDK	Full
Android	About 5 min	Native Android app for on-site checks.	Typed SDK	Full
iOS	Under 5 minutes	Native iPhone app for technician workflows.	Typed SDK	Full
Vue	~3–7 min	Reactive web UI for site maps.	Typed SDK	Full
Angular	Rapid (5 min) setup	Enterprise audit portal for operations teams.	Typed SDK	Full
GraphQL	Under 2 min	Flexible GraphQL API for nested detector data.	GraphQL API	Full
REST API	Quick (2 min) setup	REST API integration for log submission.	REST API	Full
PHP	~3 min	Server-side PHP backend for audit admin tools.	REST API	Full
.NET	~3–7 min	.NET backend for detector inspection workflows.	Typed SDK	Full

Setup time reflects expected duration from project bootstrap to first site, detector, or log query using this template schema.

Frequently Asked Questions

Common questions about building a smoke detector audit backend with this template.

What classes power the Smoke Detector Audit template?

How do I log a battery replacement for a detector?

How do sensitivity tests fit into the audit flow?

How do real-time updates work for audit routes?

Can I cache sites and detectors offline?

How do I initialize the SDK for this template in React?

When should I choose GraphQL over REST for smoke detector audits?

Which mobile stacks work best with offline detector checks?

How do I prevent someone from editing another technician's battery log?

What happens when a detector fails sensitivity testing?

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Smoke Detector Audit Backend TemplateBattery Replacement Logs and Site Test Maps