Indoor motion sensors
prices on 205 modelsIndoor
— internal sensors designed for rooms with a more or less mild microclimate — closed from street dust and precipitation, not subject to temperature changes and direct sunlight, etc. For such use, such serious protection is not needed as with outdoor installation, therefore such models are cheaper than street ones, and their reliability is quite enough for most cases. An exception can only be called cases when sensors are needed for premises like hangars, warehouses with large gates, etc.: it often happens that the conditions inside practically do not differ from the street ones, and for the normal operation of security and lighting systems, it is exactly the outdoor sensors that will be required .