DESCRIPTION:
The PSR-1 is a Light Sensitive Resistor that may be used as
an input to indicate the presence of light at the sensor
location. The PSR-1-T is a PSR-1 coupled with a B420-P
transmitter. The PSR-1-T produces a 4 - 20mA output
signal. The sensor is designed to be mounted in the end
of a weatherproof conduit box.

APPLICATION:
The PSR-1 has a resistance in darkness in excess of 1 M
and resistance in bright light of less than 1.5 k.
The PSR-1 and PSR-1-T indicate the presence or absence
of light. They should not be used for foot-candle control of
occupied spaces. The PSR-1-T is calibrated for 4mA in
bright light > 100 foot-candles and 20mA in darkness <
0.1 foot-candles.