20W small amplifier, suitable for 450C and DIY small hand relay, 433 radio and 433 model range
Board potentiometer can adjust the output of the amplifier, when even smaller, larger counter clockwise (multi turn potentiometer)
Installation method: the transmitting end of the relay is connected to the input end of the amplifier. The output end of the amplifier is connected with a duplexer and a dual device, and the duplexer is connected to the antenna

Input : 0.5-5W
Emission frequency: 410-470MHZ
Output : 18-22W
supply voltage: 10-13.8V
Standby current: 0A
Minimum size: 68x43mm
Brand
colour: black
Material: Plastic

Package Contents:
1 x 410-470MHZ 20W UHF RF Radio Amplifier AMP For 450C Relay

Only the above package content, other products are not included.
Note: and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.