ET-S34
AM312 Mini PIR Carrier
Mini PIR motion carrier with activity LED
AED 12.00
Out of stockOverview
Mini PIR motion carrier with activity LED
The ET-S34 is built around the AM312 digital PIR, 3–5m range, ~100° cone, ~2s retrigger hold, 0.1mA standby (sold separately or bundled). It runs from VIN 2.7–12V (module limit); output 3.3V.
Designed in Dubai by ElectroTrical — the full schematic, BOM and design notes are published below.
Good for
- Motion-activated lighting
- Security and presence triggers
- Low-power wake-up
Key features
What makes it different
Module
AM312 digital PIR, 3–5m range, ~100° cone, ~2s retrigger hold, 0.1mA standby (sold separately or bundled)
Value add
Motion LED, defined output state, mounting holes, labelled header; works on 3.3V and 5V hosts
Supply
VIN 2.7–12V (module limit); output 3.3V
Libraries
Plain digitalRead; gpiozero MotionSensor; ESPHome binary_sensor gpio
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
| Module | AM312 digital PIR, 3–5m range, ~100° cone, ~2s retrigger hold, 0.1mA standby (sold separately or bundled) |
|---|---|
| Value add | Motion LED, defined output state, mounting holes, labelled header; works on 3.3V and 5V hosts |
| Supply | VIN 2.7–12V (module limit); output 3.3V |
| Size | 25.4 × 17.8 mm |
|---|---|
| Mounting | 4 × M2.5 holes, 2.54 mm from each corner |
| Connectors | 3-pin 2.54 mm header |
| Revision | Rev B |
| Libraries | Plain digitalRead; gpiozero MotionSensor; ESPHome binary_sensor gpio |
|---|
| JP1 (default Closed) | Cut to turn off the power LED |
|---|---|
| JP3 (default Closed) | Cut to turn off the motion LED (stealth / low power) |
Performance
Detection distance
Pinout
Pin map and connections
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VIN | Power | 2.7–12V |
| 2 | GND | Ground | Ground |
| 3 | OUT | Power | 3.3V high while motion, ~2s hold |
Mechanical
Dimensions and what's in the box
In the box
- 1 × ET-S34 AM312 Mini PIR Carrier (assembled)
- 1 × 3-pin 2.54 mm male header, unsoldered
Getting started
- Wire the header: VIN, GND, OUT
- Libraries: Plain digitalRead
Compare
Which presence sensor?
| AM312 Mini PIR Carrier (this board)This board | ET-S06 LD2410C mmWave Presence Carrier | ET-S36 AMG8833 Grid-EYE Thermal Sensor | ET-S35 MLX90640 Thermal Camera (110°) | |
|---|---|---|---|---|
| What it does | Mini PIR motion carrier with activity LED | 24 GHz human-presence radar carrier, level-shifted UART | 8×8 thermal array for presence detection | 32×24 pixel thermal camera over I²C |
| Interface | — | UART 256000 baud 8N1 + OUT GPIO | I²C 0x68 / 0x69 (JP3), 400kHz | I²C 0x33 (EEPROM-programmable), up to 1MHz |
| Best for | Motion-activated lighting | Room occupancy for lighting and HVAC | Presence detection without a camera | Thermal imaging for electronics |
| Price | 12 AED | 15 AED | 139 AED | 229 AED |
Downloads
Documents and design files
Need a custom version of this board?
Different connector, size or sensor? We design and build custom variants.