This product is part of the Modicon M171/M172 range, an offer of connection accessories for HVAC solutions. This screw terminal block offers 28 I/Os with base controller. It is furnished with 2 removable terminal block screw connectors for electrical connection. It is compatible with logic controller M172 performance. 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.