hvac_rpi_io

raspberry pi input output expansion board. intended for controlling heating, ventilation, and air conditioning systems. has overcurrent and wiring error protections. durable and reliable in harsh industrial environments. includes 8 relay outputs, 8 switch inputs, 8 thermistor inputs, 4 thermocouple inputs, 2 rs485 interfaces, 4 HVAC damper actuator interfaces (0-10V analog output), 1 interface for tm1637 4 digit display, 2 0-10V analog inputs, 1 5-20mA analog input, 1 0-5V analog input, 2 current transformer inputs, voltage monitoring.