This is a VINTAGE “GUARD-ALL LAMP & APPLIANCE TIMER“ MODEL #HT-75 (A921-14) (#1989) It is a 24 hour timer 7 Amps, 875 Watts, ¼ H.P. Motor Load, 125 Volts A.C – 60HZ. Made in U.S.A. by INTERMATIC INTERNATIONAL REGISTER CO., Spring Grove, Illinois 60081 and is UL Listed. Operating instructions are on the back of the Timer, it is a 2 prong plug-in. It is used and my husband tested it and it works fine. Please see pix for complete description. 

***IF PURCHASED OUTSIDE THE USA, SHIPPING WILL HAVE TO BE RECALCULATED***