Katlax Enterprises Pvt. Ltd. Offers On-off Delay Timer with Relay Unit. . Katlax Enterprises Pvt. Ltd. Is an ISO 9001:2000 certified company. On-off Delay Timer with Relay Unit provides ON-OFF time delay up to 30 second [Adjustable]. It also provides with one relay change over contact. It is suitable with NPN as well as PNP type sensor. The unit requires a voltage supply of 230VAC and it consumes 4VA power. On Off delay is 30 seconds maximum.