Heatmiser UH8-RF The Heatmiser UH8-RF is our 8 Zone wireless wiring centre designed to work with our Slimline-RF and neoAir Thermostats. The UH8-RF provides central switching and is therefore ideally situated next to the underfloor heating manifold. 8 zones can be controlled as well as providing an output for a hot water cylinder. On demand from any zone, a 230v output is provided to switch the relevant zone actuators, underfloor heating pump and valve. A volt free connection is supplied for the boiler, making it compatible with almost all types of boilers. The boiler signal can also be sent via RF to the RF Switch, providing the installer a totally wireless solution. Up to 6 actuators can be connected to each zone.