Simple RF M4 Receiver - 315MHz Momentary Type
315 MHz ASK receiver with four output pins that stay active only while the matched keyfob button is held (momentary). Powered from ~5 VDC; no microcontroller or addressing required. Multiple receivers in range will all respond to a single remote simultaneously.
Pinout
- VCC
Receiver supply input; product page says to power the receiver with about 5 VDC.
Type · PowerVoltage · ~5 VDC, do not exceed 6 V per Adafruit warning - GND
Receiver ground/reference connection for the 5 V supply and output signals.
Type · GroundVoltage · 0 V - A output
Output controlled by keyfob button A; M4 momentary type goes high while A is held and low when released.
Type · GPIOVoltage · logic high from receiver when active; receiver powered at ~5 VDC - B output
Output controlled by keyfob button B; M4 momentary type goes high while B is held and low when released.
Type · GPIOVoltage · logic high from receiver when active; receiver powered at ~5 VDC - C output
Output controlled by keyfob button C; M4 momentary type goes high while C is held and low when released.
Type · GPIOVoltage · logic high from receiver when active; receiver powered at ~5 VDC - D output
Output controlled by keyfob button D; M4 momentary type goes high while D is held and low when released.
Type · GPIOVoltage · logic high from receiver when active; receiver powered at ~5 VDC
| Pin | Type | Function | Voltage |
|---|---|---|---|
| VCC | Power | Receiver supply input; product page says to power the receiver with about 5 VDC. | ~5 VDC, do not exceed 6 V per Adafruit warning |
| GND | Ground | Receiver ground/reference connection for the 5 V supply and output signals. | 0 V |
| A output | GPIO | Output controlled by keyfob button A; M4 momentary type goes high while A is held and low when released. | logic high from receiver when active; receiver powered at ~5 VDC |
| B output | GPIO | Output controlled by keyfob button B; M4 momentary type goes high while B is held and low when released. | logic high from receiver when active; receiver powered at ~5 VDC |
| C output | GPIO | Output controlled by keyfob button C; M4 momentary type goes high while C is held and low when released. | logic high from receiver when active; receiver powered at ~5 VDC |
| D output | GPIO | Output controlled by keyfob button D; M4 momentary type goes high while D is held and low when released. | logic high from receiver when active; receiver powered at ~5 VDC |
Pin details
6 connections- VCC
Receiver supply input; product page says to power the receiver with about 5 VDC.
PowerVoltage · ~5 VDC, do not exceed 6 V per Adafruit warning - GND
Receiver ground/reference connection for the 5 V supply and output signals.
GroundVoltage · 0 V - A output
Output controlled by keyfob button A; M4 momentary type goes high while A is held and low when released.
GPIOVoltage · logic high from receiver when active; receiver powered at ~5 VDC - B output
Output controlled by keyfob button B; M4 momentary type goes high while B is held and low when released.
GPIOVoltage · logic high from receiver when active; receiver powered at ~5 VDC - C output
Output controlled by keyfob button C; M4 momentary type goes high while C is held and low when released.
GPIOVoltage · logic high from receiver when active; receiver powered at ~5 VDC - D output
Output controlled by keyfob button D; M4 momentary type goes high while D is held and low when released.
GPIOVoltage · logic high from receiver when active; receiver powered at ~5 VDC
Start wiring
UART · SPI · 3.3 V · Breakout
Verify supply voltage and logic levels before powering up.
Module pins: VCC, GND. Schematik maps them to your board in the app.
LoRa & RF
93 other optionsRFM95W and SX1262 LoRa transceivers, Wio-E5 LoRaWAN modules, SX1302 gateways, Digi XBee mesh radios, 433 MHz ASK serial links, Dragino IoT sensor nodes, and the SDRplay RSP2 wideband SDR receiver.
2mm 10-Pin XBee Header visual preview2mm 10-Pin XBee Header
2mm 10-Pin XBee Socket - SMD visual preview2mm 10-Pin XBee Socket - SMD
2mm 10pin XBee Socket visual preview2mm 10pin XBee Socket
315MHz ASK/OOK Transmitter Module visual preview315MHz ASK/OOK Transmitter Module
315MHz RF Link Kit visual preview315MHz RF Link Kit
315MHz RF Shield For Arduino visual preview315MHz RF Shield For Arduino
433MHz Wireless Serial Transceiver Module - 1 Kilometer visual preview433MHz Wireless Serial Transceiver Module - 1 Kilometer
900MHz Antenna Kit - For LoPy, LoRa, etc visual preview900MHz Antenna Kit - For LoPy, LoRa, etc
Adafruit RFM69HCW Transceiver Radio Breakout - 868 or 915 MHz - RadioFruit visual previewAdafruit RFM69HCW Transceiver Radio Breakout - 868 or 915 MHz - RadioFruit
Adafruit RFM95W LoRa Radio Transceiver Breakout - 868 or 915 MHz - RadioFruit visual previewAdafruit RFM95W LoRa Radio Transceiver Breakout - 868 or 915 MHz - RadioFruit
ADS-B 1090 MHz Antenna (0.6m, 5.5dBi) visual previewADS-B 1090 MHz Antenna (0.6m, 5.5dBi)
ADS-B 1090 MHz Antenna (1.2m, 8.5dBi) visual previewADS-B 1090 MHz Antenna (1.2m, 8.5dBi)
Related groups
4 groups
2.4 GHz Bluetooth Low Energy 4.0 Module V-13051 (-4 dBi) visual previewBluetooth
BLE 5-era modules (nRF52840, MDBT50Q), XIAO MG24 boards with Matter-over-Thread, Bluefruit UART/SPI bridges, HM-11 serial modules, and BLE sniffers cover different jobs and different hosts.
Wireless & comms · Bluetooth modules · 71 parts
600-6000MHz 5G Antenna visual previewCellular
Adafruit FONA GSM breakouts, the Gravity Air780EU 4G Cat 1 module, Dragino NB-IoT Shield-B8, Pycom FiPy, Quectel and SIMCom M.2 5G modems, and the RockBLOCK 9603 Iridium modem each target a different network tier.
Wireless & comms · Cellular · 58 parts
4G GNSS-RTK High Precision Positioning Kit (EMEA & Thailand, GPS / GLONASS / Galileo / BDS / QZSS) visual previewGNSS & GPS
Adafruit Ultimate GPS (PA1616S/PA1616D), NEO-6M and NEO-M9N u-blox breakouts, Gravity GNSS BeiDou boards with I2C/UART, and 4G or LoRa RTK kits — accuracy and constellation requirements split them.
Wireless & comms · GNSS & GPS · 68 parts
150M Miniature WiFi (802.11n) Module for Raspberry Pi visual previewNetworking
ESP8285, ATWINC1500, and EMW3060 Wi-Fi modules; the WIZ5500 Ethernet co-processor; the DP83848 RMII PHY board; 802.11n USB adapters for the Pi; and an XBee USB configuration adapter.
Wireless & comms · Wi-Fi & networking · 26 parts