I fitted a Horstmann PRT yesterday for a blind customer. It has 2 large buttons for up/down temperature and has audible beeps. Comes with braille writing on the buttons too. As far as ease of use goes, I don't think there are any easy to use PRT and I have to say, it took me a while to set up and programe this one, but once it's done, it's probably just a matter of + or -.
Some info below.
ThermoPlus – simplicity of use with advanced programmable features
The Horstmann family of ThermoPlus programmable room thermostats sets new standards in their ease and simplicity of use.
The ‘stats, which are suited to both new build installations or replacement of older style electro-mechanical thermostats, will find a range of applications in areas such as local authority housing, housing associations and social housing. The ThermoPlus is designed for ease of use, offering the user a clear understanding of the controls and how they can be adjusted.
- Each model features 5 pre-installed profiles
- The installer can easily select the preferred programme
- Features a colour coded, bright LED warm/cool display and Braille markings on the main override buttons
- Automatic winter and summer time change (GMT/BST)
- Frost protection
Four models to choose from:
ThermoPlus AS2 RF; a wireless, battery powered thermostat that makes use of an advanced Z-Wave™ mesh wireless control language
- Supplied complete with receiver unit (ASR-RF)
- Local override facility
- Factory pre-set heating profiles and pre-set clock with battery back up
- Audible and tactile feedback
ThermoPlus AS1: mains powered and offers simple three button operation
- All the above features (except RF)
ThermoPlus AS2: As the AS1 butbattery powered model.
- Three standard AA batteries with at least a 2 year battery life
- Separate clock power back-up
ThermoPlus PRT1: Similar to AS1 especially designed for vulnerable/older users.
- Mains powered and requires an all-installer set-up to agreed parameters
- Features 15º cool setting to provide hypothermia protection