Solo 460 Heat Detector Tester Head Unit - Heat Detector TestersManufactured by Detectortesters, from the Solo range, our Solo 460 Heat Detector Tester Head Unit is cordless. This system contains only the head unit and any pole extension poles would be required, and this detector tester is a replacement head from the Solo 461 heat detector kit. The benefits of the Solo 460 Heat Detector Tester Head Unit include: Lightweight and simple to use Reduces testing time dramatically Sets detector into alarm more rapidly