Honeywell RLV-3120 digital 220V line thermostats. Suitable for electric basboard heaters only. Displays room temperature and heating intensity. Not suitable for electric fan heaters because of the short cycles. More sensitive and energy efficient than mechancial dial thermostats, adds home comfort. Operating Instructions here: https://customer.resideo.com/resources/techlit/TechLitDocuments/33-00000s/33-00149EF.pdf Used for about 4 years. In perfect working condition. Selling because I have switched to smart thermostats. I have 2 for sale $13 for 1 $23 for 2