Chauvin Arnoux CA 1550 [P01654555] Differential Manometer,  2,450 Pa. The Chauvin Arnoux have direct control by our STATOP temperature controllers. Mounting on DIN rail (16 and 30A models) or on cabinet back panel. This product have 230V single-phase networks and full wave-switching operation (on-off). It Controlled by 0...24V DC logic voltage, digital dry contact via an external bus module available as an option.