5A DPCO Latching - C9 Series Relays have a test button and mechanical flag indicator fitted as standard. The test button is colour coded and dual function, push to test or lift to latch. A removable marking label is fitted to each relay. The maximum switching voltage is 250 V ac and the operating temperature is -40 to +60°C. Contacts remain latched on even after the supply is removed from the 'set' input Contacts are switched off by pulsing the 'reset' input Relay socket also available (see stock no. 437-783 )