Model              ESP8266
Color                Green
Size(L*W*H)    66.5 x 40 x 20 mm
ISM                   2.4 GHz
PA                   + 25 dBm
Relay voltage    220 V
Relay Current    10 A
Input voltage     DC 7 V~30 V
Input over voltage protection    Yes
Input over current protection    Yes

Features:
1.More safe with relays PCB pin anti-climb design.
2.With ESP8266 Wifi module,4-layers board design.
3.One output status indicator, one input status indicator.
4.220V 10A relay, one normally open, one normally closed.
5.One way optocoupler isolation input, TVS input protection.
6.Access control server via TCP CLIENT mode Via HTTP protocol control.High-current terminals.
7.Input overvoltage protection, input with TVS, when voltage exceeds 33V, automatic protection will operate.