Simple RF T4 Receiver - 315MHz Toggle Type

315 MHz ASK receiver with four independently toggling output pins: each button press alternately sets or clears the corresponding pin. Powered from ~5 VDC; no addressing or error-checking. Differs from the M4 momentary and L4 latching-selector variants.

Logical pinout · physical placement not verified

VCC
Receiver supply. Adafruit says to power the receiver with about 5 VDC and warns that anything higher than 6 V can damage it.
Type · PowerVoltage · ~5 VDC recommended; do not exceed 6 V per Adafruit product note
GND
Power return for the receiver module supply.
Type · GroundVoltage · 0 V
A output
Toggle output controlled by the A button. Adafruit states pressing A activates the first output pin, and on the T4 type repeated presses turn that pin on and off.
Type · GPIOVoltage · logic high when active, low when inactive; module powered at ~5 VDC
B output
Toggle output controlled by the B button. Adafruit states pressing B activates the second output pin, and the T4 receiver toggles matching pins on repeated presses.
Type · GPIOVoltage · logic high when active, low when inactive; module powered at ~5 VDC
C output
Toggle output controlled by the C button. Adafruit describes a one-to-one link between remote buttons and the four receiver output pins.
Type · GPIOVoltage · logic high when active, low when inactive; module powered at ~5 VDC
D output
Toggle output controlled by the D button. Adafruit describes all four buttons each activating a matching receiver pin.
Type · GPIOVoltage · logic high when active, low when inactive; module powered at ~5 VDC

Pin	Type	Function	Voltage
VCC	Power	Receiver supply. Adafruit says to power the receiver with about 5 VDC and warns that anything higher than 6 V can damage it.	~5 VDC recommended; do not exceed 6 V per Adafruit product note
GND	Ground	Power return for the receiver module supply.	0 V
A output	GPIO	Toggle output controlled by the A button. Adafruit states pressing A activates the first output pin, and on the T4 type repeated presses turn that pin on and off.	logic high when active, low when inactive; module powered at ~5 VDC
B output	GPIO	Toggle output controlled by the B button. Adafruit states pressing B activates the second output pin, and the T4 receiver toggles matching pins on repeated presses.	logic high when active, low when inactive; module powered at ~5 VDC
C output	GPIO	Toggle output controlled by the C button. Adafruit describes a one-to-one link between remote buttons and the four receiver output pins.	logic high when active, low when inactive; module powered at ~5 VDC
D output	GPIO	Toggle output controlled by the D button. Adafruit describes all four buttons each activating a matching receiver pin.	logic high when active, low when inactive; module powered at ~5 VDC

Logical pinout · physical placement not verified

Pin details

6 connections

VCC
Receiver supply. Adafruit says to power the receiver with about 5 VDC and warns that anything higher than 6 V can damage it.
PowerVoltage · ~5 VDC recommended; do not exceed 6 V per Adafruit product note
GND
Power return for the receiver module supply.
GroundVoltage · 0 V
A output
Toggle output controlled by the A button. Adafruit states pressing A activates the first output pin, and on the T4 type repeated presses turn that pin on and off.
GPIOVoltage · logic high when active, low when inactive; module powered at ~5 VDC
B output
Toggle output controlled by the B button. Adafruit states pressing B activates the second output pin, and the T4 receiver toggles matching pins on repeated presses.
GPIOVoltage · logic high when active, low when inactive; module powered at ~5 VDC
C output
Toggle output controlled by the C button. Adafruit describes a one-to-one link between remote buttons and the four receiver output pins.
GPIOVoltage · logic high when active, low when inactive; module powered at ~5 VDC
D output
Toggle output controlled by the D button. Adafruit describes all four buttons each activating a matching receiver pin.
GPIOVoltage · logic high when active, low when inactive; module 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.

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Pinout