by ericmark »
Tue Feb 16, 2010 4:44 am
Most electronic stats use two wires. Most old mechanical types need three wires. Most radio controlled stats need three wires.
The "Horstmann DRT2 Room Thermostat" needs just two wires and that one also has timer built in so instead of switching off central heating it selects a different temperature so no need for frost stat. At £23.25 not really expensive. They need batteries changing every two years.
The "Horstmann DRT1 Room Thermostat" is same without timer and at about £19 is it really worth doing without time function?
I use DRT2 and it hold temp at 16 degrees at night then 20 degrees first thing then drops to 18 through day and back to 20 degrees in evening 5 days a week the sat and sun only has two settings.
Prices I got from Screwfix site to give you idea of costs.
