Control via radio with 4 buttons, pocket, key ring or pendant. 4 functions, activated by 3 channels (each channel has a different address): connect and disconnect on the same channel, panic and a programmable output on the other two channels. Scope (direct vision) 200 m. It supports dynamic code generation with up to 16 million combinations. Indication of transmission or low battery by LED. It works with a 3 V lithium battery type CR2430, lasting 3 years. European frequency 868 MHz. Dimensions: 72 x 37 x 14 mm.