Review on Honeywell 5800PIR Wireless Motion Detector by Chris Peck

Small and works well. Offers the ability to be reconfigured to include downward viewing as well (the small mirror inside needs to be flipped). Has 3 loops. The first loop has low sensitivity (two piloted aircraft must be interrupted for operation) for use with pets weighing 80 pounds or less. The second loop has high sensitivity (only a controlled plane needs to be broken) and has a third loop as an unexpected bonus. that fires at low temperatures (45 +/- 3 degrees Fahrenheit). You can use loops at the same time, so using loops 1 and 3 or 2 and 3 for both motion and low temperature alerts (each occupying an RF alert zone) will work fine. If you just need motion detection with no temperature, just use loop 1 or 2 and an HF alert zone.