9050A pneumatic timing relays are designed for very rugged conditions. The timing range of this on delay timer is typically about one minute. This timing relay can be converted by a customer from on delay to off delay. The replacement snap switch for this timing relay is a 9007AO104. The contacts have a 15A resistive rating at 600 VAC. The coil can be replaced. This timing relay has a 110/120 VAC 50/60 Hz coil. This product is not enclosed in an enclosure. This pneumatic timing relay is 2.64 inches tall, 4.02 inches wide and 4.37 inches deep. 9050A pneumatic timing relays are UL listed and CSA certified.