Comes with programmed ESP8266 WIFI module Default firmware type Access Point. Compatible with Home Asistance. Just Instal ESPhome into Home Assiatnce and Upload Yaml file to device. Please let us know if you need Yaml file Maximum peak current 5.0V – 2000mA Maximum current per relay – 10A peak LEDs indicators for each electromagnetic relay channel Relays with SPDT switch contacts: Normally Open, Common, Normally Closed Relay contact resistance 100 milliohms max. ( initial value ) Relay insulation resistance 100 MOhm min. (DC 500V) Relay operation time 8 ms max Relay release time 5ms max Relay dielectric strength 750 VAC, 50/60Hz between contact Relay dielectric strength 1,500 VAC, 50/60Hz between all elements Relay expected life Mechanical - 10,000,000 operations min. Relay expected life Electrical - 100,000 operations min. at rated load Working temperature range - 25 C ~ + 80 C The module contains an I2C expander 16bit MCP23017 chip The logic power supply voltage should match the voltage levels on the I2C bus. The module contains an I2C expander 16bit MCP23017 chip Relay expected life Mechanical - 10,000,000 operations min.and also Relay expected life Electrical - 100,000 operations min. at rated load Device specification : USA SELLER Board comes fully assembled Comes with programmed ESP8266 WIFI module Default firmware type Access Point, SSID 8CH relay AP, default IP address 192.168.4.1 PCB board dimension 130mm x 150mm Operation DC voltage 5.0V Maximum peak current @5.0V 2000mA Maximum current per relay 10A peak LEDs indicators for each electromagnetic relay channel Relays with SPDT switch contacts: Normally Open, Common, Normally Closed Relay contact resistance 100 milliohms max. ( initial value ) Relay insulation resistance 100 MOhm min. (DC 500V) Relay operation time 8 ms max Relay release time 5ms max Relay dielectric strength 750 VAC, 5060Hz between contact Relay dielectric strength 1,500 VAC, 5060Hz between all elements Relay expected life Mechanical - 10,000,000 operations min. Relay expected life Electrical - 100,000 operations min. at rated load Working temperature range - 25 C + 80 C The logic power supply voltage should match the voltage levels on the I2C bus. For more informationresources, please contact with us via messaging system.