Product Parameter Parameter Description Dimensions 62Lx43.5Wx30H(mm) Input 12VDC (24VDC by Optional) Current 8mA Aptional Accessories WBK-400A Contact Output: NO、NC、COM Transmitting Freq 433.92MHZ Suitable for access control Transmitting Distance ≤50m(in the open area) Finished for Shell Plastic,Website:http://www.ylisec.com, Abrasion Resistant Capable of to 30 Transmitter Weight 0.09kg