Horstmann H37XL Obsolete Compatible Replacement Programmer – Hanicks 3 Channel Boiler Heating & Hot Water Control (Like-for-Like Replacement)
Secure H3747 Smart 4 Channel Programmable Stat ~ Replaces Horstmann H37XL H47XL
Horstmann DRT2 Programmable Electronic Room Thermostat Hardwired AC24...250v
Horstmann ChannelPlus H27XL Series 2 2-Channel 7 Day Electronic Programmer
Horstmann ChannelPlus H27XL Series 2 2 Channel 7 Day Electronic Programmer
Horstmann ChannelPlus H47XL 4-Channel 7 Day Electronic Programmer
