zhen KYL Communication Equipment Co ., Ltd Shen Shenz Co. KYL-O302 4-way ASK Relay Module Technical Parameter: Working voltage: DC12V working frequency: 315MHZ、433.92MHZ (optional for other frequency) Standby current: 6mA Working current: 70mA Sensitivity: -103dBm Working mode: M4 / L4 / T4 Encode mode: bonding pad encode (fixed code) Modulation mode: AM(OOK) Working temp: -10℃~+70℃ Dimension: 63mm×39mm×13mm Diagram of Pin Pin:: Pin Name Function 1 GND negative 2 VCC positive 3 NC1 relay 1 always-off terminal 4 COM1 relay 1 public terminal 5 NO1 relay 1 always-on terminal 6 NC2 relay 2 always-off terminal 7 COM2 relay 2 public terminal 8 NO2 relay 2 always-on terminal 9 NC3 relay 3 always-off terminal 10 COM3 relay 3 public terminal 11 NO3 relay 3 always-on terminal 12 NC4 relay 4 always-off terminal 13 COM4 relay 4 public terminal 14 NO4 relay 4 always-on terminal www.rf-data.com [email protected] Fax: 86-755-83408785