Replaces the Horstmann / Secure C17, C27, H17XL and H27XL. The C1727 also includes many of the latest Boiler Plus energy-saving features such as optimum start and stop per heating zone, as well as on-off load compensation.
Secure C1727 PTD Replaces Horstmann Heating Thermostat Programmer Receiver
Secure C1727 2 Channel Programmable Room Thermostat Direct Replacement for Horstmann CentaurPlus ServicePlus Thermoplus Bluetooth Programming with Smart WIFI Add-On Option App Controlled
Secure C1727 & PTD Smart Programmer & Receiver
Secure/Horstmann C1727 Smart Phone Wireless App Controlled 2 Channel Programmable Room Thermostat Direct Replacement Secure/Horstmann C17 & C27 Genuine Part - Hanicks
Secure Smart Programmable Thermostat C1727 & Programmable Thermostat Display PTD
Secure HC2.4 Wifi Extender Plug In Adaptor Card for C1727 H3747 E7+
