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This later version of the LP522 has added useful features including the option to boost for 1hr, or more than 1 hour. Also the backlighting is better, making it easier to read.
Verified purchase: Yes | Condition: New
After some building work, including replacing the boiler, my existing LP522 got rained on and filled with dust. So when the heating went erratic, I blamed the harsh treatment and bought another LP522 to replace what I thought was a faulty programmer. However the fault turned out to be a wiring error on the tank thermostat. When corrected both the old and new programmers worked perfectly. The only difference with the new one is it has green rather than red LEDs to indicate the timer is on. The words boost have been appended to the Advance buttons. Holding down the boost button now operates the heating or water for an hour rather than switch on to the next off. The old one may of worked like this too! Easy to programme with up to three on and offs per day and different settings can be applied at the weekend. Changes from BST to GMT automatically and the default programming is not too far wrong for most people out of the box. Good quality and has a standard backplate so can be an easy upgrade to old mechanical timers. On top of that made in the UK.Read full review
Verified purchase: Yes | Condition: New
This proved a simple like for like replacement with no need to re-wire for my central heating controller which had become worn and difficult to set. The replacement unit works well!
Verified purchase: Yes | Condition: Pre-owned
Glad I bought this. I wanted to replace my old manual Drayton SM1 but didn't want to spend a fortune on the latest "super programmer" that does everything including make the tea! This fitted the bill nicely and was very easy to install as it clipped onto the wall plate of the old one.
Verified purchase: Yes | Condition: New
Not the cheapest twin channel timer, but has enough features and is easy to use.
Verified purchase: Yes | Condition: New