Figure shows the Series RF coded transmitter application circuit.

The circuit components used are: TXE-433 TXE-418 TXE-315

4.25 TXE-433/418/315 MHz-KH Series transmitter with encoder module TXE-433/418/315 MHz-KH series is a radio transmitter encoder module includes a high-performance RF transmitter chip and an encoder chip. Decode it with KH series receiver modules used in combination, can form a highly reliable wireless connectivity, the ability to send l ~ 8 parallel input state; address coding for the 310 group; transmission distance of more than 91.5 m (300 ft). Its support of the decoding receiver has RRXD-315-KH (315 MHz), RRXD-418-KH (418 MHz) and RRXD-433-KH (433 MHz). KH Series RF transmitters for remote code remote control, keyless entry systems, garage door opening, lighting control systems, fire alarm and security systems such as industrial automation and control.

The main technical features are as follows:

* In addition to the antenna outside, no other external RF components;

• Maximum output power of +4 dBm; · emission data length is 26 × 3;

• working voltage is 2.7 ~ 5.2 V; 

• operating current l.5 mA, sleep mode current is lµA.