Board comes fully assembled!

PCB board dimension 135mm x 150mm

Operation DC voltage – 3.3V and 5.0V

Maximum current @5.0V – 1500mA

Maximum current per relay – 5A...10A @ different voltages

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

Each board can be assigned an I2C address between 0x20...0x27 by the DIP switch

The module contains an PCF8575 chip

The logic power supply voltage should match the voltage levels on the I2C bus. The SDA and SCL lines are pulled up to VDD with 5.6k resistors on the relay module.

Up to 8 boards can be connected to each I2C bus. 8 x 16 = 128 relays can be controlled via 4 wires!

Depending on the relay stock available, the relay manufacturer may differ