The Drayton Wiser Radiator Thermostat (2nd Generation) — White, part number WV704R0A6902, is a new, improved design offering ultra-quiet operation and extended battery life. Add it to any Wiser 2nd Generation Hub or kit to create additional independent heating zones and take room-by-room control further, one radiator at a time.
The thermostat is compatible with Ni-MH rechargeable batteries as well as standard alkaline AA cells, and mounts on over 95% of existing radiator valves with the included adaptors, meaning most installations need no draining down. A simple twist-top control lets you boost the temperature directly at the device, with audible feedback confirming the action, and a device lock is available to prevent accidental changes.
Set schedules and temperatures for every room via the Wiser Home app, and benefit from open-window detection and automatic valve protection runs to keep the system working efficiently and prevent limescale build-up. If several thermostats are placed in the same room, they automatically link together in a thermostat group so they work in unison. Compatible with Amazon Alexa and the Google Assistant.
White
Zigbee-certified radiator thermostat
95%+
Radiator valve compatibility
2 Years+
Battery life under typical use
Ultra-Quiet
Operation with audible boost feedback
IP30
Ingress protection rating
Zigbee 2.4GHz
Certified radio technology
Hub Compatibility
This Radiator Thermostat works with any Wiser 2nd Generation HubR or Wiser 2nd Generation Multi-Zone/Thermostat Kit. It is not compatible with a Wiser 1st Generation HubR — check your existing hub generation before ordering.
Extend Any Room
Add one Radiator Thermostat per radiator to bring that room under independent scheduled control, grouping multiple thermostats in the same room automatically.
Ultra-Quiet Operation
The new, improved design delivers ultra-quiet valve movement, so the thermostat runs unobtrusively in living spaces and bedrooms.
Extended Battery Life
More than 2 years of battery life under typical use with the included alkaline batteries, and full support for Ni-MH rechargeable batteries.
Wide Valve Compatibility
Mounts on over 95% of existing radiator valves, with adaptors included for the most common UK valve types.
Audible Twist-Top Boost
A simple twist-top control lets you boost the temperature directly at the radiator, with audible feedback confirming the action.
Open-Window Detection
Automatically reduces heating output if a sudden temperature drop suggests an open window, helping to save energy.
Multiple Sensors for Accuracy
Uses multiple temperature sensors for high-accuracy control, plus automatic valve protection runs to prevent seizing.
Automatic Room Grouping
Multiple Radiator Thermostats fitted in the same room are automatically linked into a group, so they maintain the same set-point without manual configuration.
Device Lock
A device lock is available to prevent accidental adjustment at the thermostat itself, useful in shared or family homes.
Product Details
Part number
WV704R0A6902 (White)
Colour
White
Includes
1 x Radiator Thermostat, 1 x M30x1.5mm ring nut, 1 x Drayton valve adaptor, 1 x Danfoss RA valve adaptor, 2 x AA batteries
Technical Specification
Dimensions
79.5mm (h) x 52mm (dia)
Power supply
2 x 1.5V IEC LR6 (AA) alkaline or rechargeable 1.2V IEC HR6 NiMH batteries
Wiring
No wiring required
Maximum water temperature
73°C continuous, 110°C max
Maximum mounting surface temp
93°C
Control accuracy
<0.8°C at 4°C/hour
Radio technology
Zigbee 2.4GHz (IEEE 802.15.4), certified
Ingress protection
IP30
Will this work with my existing Wiser system?
This Radiator Thermostat is compatible with any Wiser 2nd Generation HubR or kit. It is not compatible with a Wiser 1st Generation HubR, so check which generation hub you have before ordering.
Does it fit my radiator valve?
It mounts on over 95% of existing radiator valves, with a Drayton and Danfoss RA valve adaptor included to cover the most common UK valve types.
Can I use rechargeable batteries?
Yes. As well as standard AA alkaline batteries, this thermostat is compatible with Ni-MH rechargeable batteries.
How is this different from the previous design?
This is a new, improved design with ultra-quiet operation, extended battery life, audible twist-top boost feedback, and support for rechargeable batteries.
Is a colour other than white available?
Yes. This Radiator Thermostat is also available in Anthracite (part number WV704R0A6901) if you'd prefer a darker finish.
What happens if I fit more than one in the same room?
Multiple Radiator Thermostats in the same room are automatically grouped together in the Wiser Home app, so they work to the same schedule and set-point without extra setup.
Do I need to drain the radiator to fit this?
In most cases, no. If a mechanical thermostatic radiator valve is already fitted, the Wiser Radiator Thermostat can typically be swapped on without draining the system.
