The MX-40PI combination detector incorporates a patented "Quad Zone Logic" which requires detection across multiple zones before an alarm is triggered. As a result of this technology, the MX-40PI is able to guarantee false alarm protection from 100 pound pets/animals and immunity from other smaller disturbances such as heating vents and movement from curtains. Its spherical lens design ensures sharp, precise detection zones without distortion for increased reliability.
Moreover, the MX-40PI solves an chronic problem for combination sensors - false alarms caused by interference from other microwaves. The MX-40PI introduces a built in "anti-crosstalk system," which prevents interference from matching microwave frequencies in a single area. It also features a microwave range selector and easy wiring knockouts for easy installation.
Alarms may occur due to matching frequencies, because microwaves from each detector may cause interference with each other. The MX-40PI greatly reduces interference to prevent false alarms. Should outside noise, such as electromagnetic interference and especially noise from fluorescent lights enter the antenna and cause microwave interference, the Noise Reduction Circuit of the MX-40PI cancels out the noises to prevent unwanted alarms.
MX-40PI's easy Microwave Range Selector allows simple two-step adjustment. Setting the range selector to short or long-range detection sensitivity according to the room size makes adjustment during installation much easier and less time-consuming.