The PAD300-HD from Potter is a listed analog addressable rate of rise and/or fixed temperature heat detector compatible with any fire alarm control panel that has the Potter Addressable Device (PAD) protocol. The heat sensing portion utilizes a proven thermistor for accurate and reliable heat detection. The detector and base (not included) are made of a durable plastic in an off-white to blend in with the ceiling. The PAD300-HD is UL listed with a selectable fixed temperature point from 135 to 185 Fahrenheit and can be used for rate of rise applications. See detector spacing limitations below. This flexibility allows the installer to cover a wide variety of applications with a single unit. The PAD300-HD and the control panel communicate over a proven and robust digital communication path and the system analyzes the information at the particular device. The total polling speed is less than five (5) seconds, well under the UL requirements. The detector is compatible with any of the PAD300 series detector bases and simply twists on. The PAD300-HD is addressed using DIP switches in the rear of the detector and can be easily programmed in the field without special tools. Features: Selectable Rate of Rise and/or Fixed Heat Detector Low Profile Reliable Detection Technology LED Alarm Indicator Ambient Temperature Listing of 32F to 150F Simple DIP Switch Address Setting, No Programming Tool Required Magnetic Test Switch Product includes 5-year warranty UUKL Listed for Smoke Control