This product is part of the Modicon M171/M172 range, an offer I/O modules for HVAC solutions. This additional I/O module offers 4 discrete inputs with sink or source (positive/negative) discrete input logic. It is a module with discrete input voltage of 24V AC/DC and analogue output voltage ranges from 0V to 10V. This module offers SPDT relay output with independent common and 3 SPST relay output with same common discrete output. The main application of this module is HVAC and pumping solution. Modicon M171/M172 benefits maximize profitability and energy efficiency by using scalable automation control with the Modicon M171/M172. Modicon M171/M172 logic controllers and intuitive software EcoStruxure Machine Expert - HVAC are designed for maximizing profitability and energy efficiency. Specifications Main Range of produc Modicon M171/M172 Product or component type Additional I/O module Product specific application HVAC and pumping solution Total inputs/outputs 14 Discrete input number 4 Discrete output number 1 for relay outputs SPDT with independent common 3 for relay outputs SPST with same common Discrete output current 3 A for relay Analogue input number 4 configurable by pair Analogue output number 2 voltage, range: 0...10 V Complementary Number of port 1 CAN port - screw terminal block Input/output number 2 analog output(s) 4 digital output(s) 4 analog input(s) 4 digital input(s) Discrete input logic Sink or source (positive/negative) Discrete input voltage 24 V AC/DC Discrete input current 2.5 mA Input impedance 20 kOhm Analogue input type Voltage 0...5 V (ratiometric) current 4...20 mA voltage 0...10 V NTC temperature probe - 50...110 °C - resolution: 0.1 °C NTC temperature probe - 40...137 °C - resolution: 0.1 °C (extended) PTC temperature probe - 50...150 °C - resolution: 0.1 °C Sensor power supply 12 V DC at 85 mA [Us] rated supply voltage 24 V