Good used working condition. Really clean units
Horstmann Secure 425 Tiara Two Circuit Electro-Mechanical Programmer NU555030100
HORSTMANN 425 DIADEM TWIN CHANNEL HEATING & HOT WATER PROGRAMMER
Horstmann 425 Diadem Central Heating & Hot Water Programmer Timer Controller
Horstmann 425 Coronet Single Circuit Timeswitch Programmer Timer **SEALED**
Horstmann 425 Coronet Single Circuit Electro-Mechanical Time Switch
Horstmann H3747 Smart Room Thermostat Replaces H37XL/H47XL/Tiara/Diadem/Coronet
