This is a set of 315Mhz Wireless RF Transmitter and Receiver. The transmitter includes an inbuilt battery, 4 buttons and comes in a small package and can also be used as a keychain. The receiver has 4 output pins. The four output pins on the receiver change from 0V to 5V when the corresponding button on the transmitter is pressed.
Specifications
Features
Key ring fob with 4 push buttons and extendable antenna
Frequency
315Mhz
I/O Pins
5V TTL Active High
Operating Voltage
Receiver - 5V
Remote - Battery operated (12V 23AE included)
Temperature Range
-10'C ~ 70'C
Transmission Distance
10-100m (varies based on surrounding interference , We recommended 10m only)