Apollo Series 65 Fire Alarm Relay Base, 12 V, Volt-Free Contact 45681-508APO

What this relay base does

A relay base lets a detector switch something else when it operates, such as a door release or a signal to another system, as well as raising its normal alarm. As a rule, what you connect must suit the contact ratings and your system design.

This is a low-profile base for Series 65 products, and it does nothing on its own. The detector operates the relay.

How it works

• Volt-free contact: the contact carries no power of its own, so it can switch a separate circuit. Changeover means it has normally open and normally closed sides.
• Latching: the relay stays operated after the detector triggers, until the circuit is reset. This is the fire position of the jumper.
• Non-latching: the relay follows the detector and is the choice for security panels.

Where to use it

It suits 12 volt conventional fire work and security control panels, and the wiring diagrams show two wire and monitored four wire layouts. Keep it within its temperature range, away from condensation and icing.

Installing it

• Inside the base: all electronic components, including the relay, sit on a PCB held by two screws.
• End of line: the wiring diagram shows an optional end-of-line part for monitored circuits, and that depends on the panel.

Planning your system

The job also needs a Series 65 detector, such as a Series 65 smoke detector or a Series 65 heat detector.

It also needs a supply within the voltage range. Most commercial fire panels run on a higher voltage than this base accepts, so read the panel's output before ordering.

For other mounting options see the fire detector bases range, or the wider Apollo collection for more parts.