ET-S74
DRV5032 Magnetic Door Switch
Ultra-low-power Hall switch for doors and lids
AED 12.00
Out of stockOverview
Ultra-low-power Hall switch for doors and lids
The ET-S74 is built around the TI DRV5032FA — omnipolar Hall switch (N or S pole), ±4.8mT operate, 20Hz sampling, 1.6µA average. It talks over Push-pull digital out, low with magnet and runs from 1.65–5.5V.
Designed in Dubai by ElectroTrical — the full schematic, BOM and design notes are published below.
Good for
- Door and window sensors
- Lid-closed detection
- Battery wake-up triggers
Key features
What makes it different
Sensor
TI DRV5032FA: omnipolar Hall switch (N or S pole), ±4.8mT operate, 20Hz sampling, 1.6µA average
Interface
Push-pull digital out, low with magnet
Supply
1.65–5.5V
Range
~10–20mm with a 10×3mm neodymium magnet
Open documentation
Schematic, BOM and layout notes published for every board.
Breadboard friendly
Standard 2.54 mm pitch and M2.5 mounting holes.
Specifications
Technical specifications
| Sensor | TI DRV5032FA: omnipolar Hall switch (N or S pole), ±4.8mT operate, 20Hz sampling, 1.6µA average |
|---|---|
| Interface | Push-pull digital out, low with magnet |
| Supply | 1.65–5.5V |
| Range | ~10–20mm with a 10×3mm neodymium magnet |
| Size | 20.0 × 12.0 mm |
|---|---|
| Mounting | 2 mounting holes (M2) |
| Connectors | 3-pin 2.54 mm header |
| Main IC | DRV5032FADBZR (LCSC C140921) |
| Revision | Rev A |
| Libraries | Any GPIO / wake-up interrupt; ESPHome binary_sensor: gpio |
|---|
Performance
Power use
Pinout
Pin map and connections
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VIN | Power | 1.65–5.5V |
| 2 | GND | Ground | Ground |
| 3 | OUT | Power | Low = magnet present (push-pull) |
Mechanical
Dimensions and what's in the box
In the box
- 1 × ET-S74 DRV5032 Magnetic Door Switch (assembled)
- 1 × 3-pin 2.54 mm male header, unsoldered
Getting started
- Wire the header: VIN, GND, OUT
- Libraries: Any GPIO / wake-up interrupt
Compare
Which simple sensor?
| DRV5032 Magnetic Door Switch (this board)This board | ET-S71 5-Channel IR Line Sensor | ET-S72 IR Remote Receiver + Transmitter | ET-S75 Water Leak / Rain Detector | |
|---|---|---|---|---|
| What it does | Ultra-low-power Hall switch for doors and lids | 5 reflective IR sensors with analog outputs and emitter enable | Learn and send TV / AC remote codes, 38 kHz | Gold-plated probe with adjustable digital and analog outputs |
| Interface | Push-pull digital out, low with magnet | 5 analog outputs (use ADC pins) + emitter enable | RX digital out (active low), TX logic in (carrier… | — |
| Best for | Door and window sensors | Line-following robots | Home Assistant IR blasters | Leak alerts under sinks and heaters |
| Price | 12 AED | 29 AED | 22 AED | 15 AED |
Downloads
Documents and design files
Need a custom version of this board?
Different connector, size or sensor? We design and build custom variants.