The 12V Relay Base from Apollo Fire Detectors allows the company's Series 65 range of commercial-standard smoke and heat detectors to be easily incorporated into 12V home security installations.

The base uses a single volt-free changeover contact, and can operate over a range of 9V - 15V DC, making it ideal for use in 12V applications such as non-latching security systems. In order to operate, the base requires a Series 65 detector. Options from this range include the Optical and Ionisation smoke detectors, and various Heat detectors. A jumper on the base's PCB can be set to ‘latching' for fire systems, and ‘non-latching' for security systems. In latching mode, an alarm state will continue until it is manually reset, whereas in the non-latching mode it will automatically reset both the base and the detector in order to integrate with a security system. As with all Series 65 bases, a ‘one way only' fit system is in place which makes it both easy and safe to correctly fit the detector to the base.