Steinel did some thinking, pondered, tried things out, dismissed them and got down to testing. For the most intelligent house number light we've ever made. For the first time, it has been possible to integrate the sensor in a light source so that it can't be seen. As an LED uplight and downlight, the L 820 iHF outdoor SensorLight translates intelligence into fabulous looks and technology that set off your house number like no other. In developing it, the product's future value was also important to us. Intelligent technology has a permanency and constancy about it – it is brighter, cooler and smarter. Optional manual override for 4 hours.