Safety Relays: Type - Safety Relay; Application - E-Stop, Safety Gate; Outputs - Safety - 2 NO; Power Supply - 24V DC; Reset - Automatic/Manual; Operating Temperature - -20 to 55 deg C; Mounting - DIN Rail; Dimensions - in - 0.88 in W x 4.40 in H x 4.50 in D; Additional Information - Rated Surge Voltage/Insulation: 4KV/Basic Isolation, Silver Tin Oxide