Widely used in home alarm , panic, buttons, garage door, rolling curtain, etc. Delicate and nice appearance, 4 control buttons. Approx. 6.8cm x 4cm x 1.6cm (Length*width*Height). Frequency 433 mhz,Transmit distance within 80M (Open space) Operation: 12V DC. 1 x 4-Channel Remote Control (without battery)
