Among the most technologically advanced detectors available, the WS4904 achieves superior detection and false alarm prevention through digital signal analysis. Digital information is more accurately analyzed using software and is not subject to signal degradation caused by amplification, noise, distortion or signal clipping. The detector's technology adapts to changing environmental conditions by adjusting critical detection parameters to provide improved consistency of detection over all temperature ranges. Pet owners looking to be protected from false alarms can choose the WS4904P model version, a detector that is immune from pets weighing up to 60 lbs (27 kg).

• Wireless Passive Infrared Detector with Pet Immunity (NA Baud Rate)
• Reliable 433 MHz technology
• WS4904P model version provides pet immunity up to 60 lbs (27 kg)
• Digital signal analysis for consistent detection throughout the coverage pattern
• Exceptional catch performance at elevated temperatures
• Patented Multi-Level Signal Processing (MLSP) for accurate detection of human IR energy over a broad range of temperatures
• High-traffic shutdown
• Temperature compensation
• PCB antenna
• 1 long-life lithium battery included; capable of up to 9 years of battery life
• Sensitivity adjustment to configure the detector for "normal" (high sensitivity) or "hostile" (low sensitivity) environments
• Coverage 40 ft x 40 ft (12 m x 12 m)

• MAXSYS Wireless Receiver PC4164-433
• Fixed-Message LCD Keypad with Integrated Wireless Receiver RF5501-433
• Envoy LCD Self-Contained Wireless Security System NT9005

PowerSeries Wireless Receivers:

• RF5132-433
• PC5132-433
• RF5108-433

PowerSeries RFK Keypads:

• RFK5500
• RFK5501
• RFK5516
• RFK5508