Simplex 4098-9714 S/F 19/09 and a backbox

and a backbox

It transmits the status of one zone of two-wire detectors to the fi re alarm control panel

The Series of photoelectric smoke alarms with visual signaling appliance are designed for residential and commercial residential applications

or 110 candela

Simplex 4098-9714 S/F 19/09 and a backboxTrueAlarm photoelectric sensors use a stable, pulsed LED light source and a silicon photodiode receiver to deliver consistent and accurate low power smoke sensing. Three user selectable sensitivities for special applications are available for each individual sensor, 0. 2%, 0. 5%, and 1% per foot. Standard sensitivity is 1. 25% to 3. 1% per foot. The fire alarm control panel runs an algorithm that can vary the sensitivity for normal applications