PSHA Obsolete Product

Addressable Photoelectric Smoke / Heat Detector


The combination Photoelectric Smoke/Heat Sensor is a listed Analog/Addressable smoke sensor and fixed temperature heat sensor compatible with any fire alarm control panel that has the Potter/Nohmi protocol. The PSHA is a low profile combination smoke/heat sensor with a wide sensitivity range. The heat sensing portion utilizes a proven thermistor for accurate and reliable heat detection. The sensor and base (not included) are made of a durable plastic in an eggshell
white (off white) to blend in with the ceiling.

The PSHA has a sensitivity range of 1.05 to 3.82% per foot and is UL and cUL listed. The PSHA is also a 135° Fahrenheit restorable heat sensor. The PSHA can be configured for drift compensation and has built in dirty detector warning as well as. The PSHA and the control panel communicate over a proven and robust digital communication path and the system analyzes the level of alarm at the particular device. The total polling speed is less than five (5) seconds, well under the UL requirements. The PSHA is listed to both UL 268 Smoke Detection Standard and UL 521 Heat Detection Standard.

The PSHA has a single LED that allows for 360° viewing. The sensor is compatible with any of the Potter/Nohmi bases and simply twists on. The PSHA is addressed using the hand held programmer or the control panel addressing function.


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