221-2/3 High Temperature

Detectors

221-2/3 High Temperature

121-2s

The 221-2 and 221-3 are similar to the 121-2 and 121-3 but are designed to interface with fire alarm control panels, PLC's, etc.

The 221 requires 24 VDC and provides an open collector control for powering various devices.

The 221 offers a standard 4 wire interface with normally open, dry contacts.
The 221-2 has two fiber optic probes and the 221-3 has three.

FEATURES

Response less than 1 millisecond

Sensitivity less than 100 nano watts

Broad Spectral Response

Wide field of view (70º per probe)

Easy mounting

Smooth surface to help self clean

Two or three probe versions

More information

221-2/3 High Temperature