Pyronix Wireless Contact is specifically designed to be placed in positions where it is necessary for a shock sensor alone or shock sensor and magnetic contact to be present, such as walls, ceilings, door and window frames; two sensors in one. The sensors can both be learned separately to the panel allowing separate shock and magnetic contact transmissions of alarm signals to be sent to the panel. They can also be learned individually, if for some reason either the shock or the magnetic contact is not required. One of the key advantages of implementing of the SSI technology is to allow the installer to view the wireless transmission signal strength on both the control panel and wireless devices in real time. ABS plastics 2mm polished finish, reduces electrostatic interference.