PIR1680 The Ultimate Micro-Processor Controlled PIR   • 50' x 50' Broad Coverage Range   • Revolutionary "Room-Alert™" (pats pending): FREE built-in real temperature monitoring sensor   • This Low-Temperature or Rising-Temperature alarm protects premises from damage due to heating system failure or inventory spoilage due to cooling system malfunction   • D.C.I.D.™ - Detect and Compare Imaging Diagnostics - provides the ultimate in stability and catch   • Active self-test of key components for increased reliability components with resilient SMD circuitry   • Look-Down/Creep Zone   • Wall or corner mountable   • Tamper supervised