Honeywell 943WG Mini Surface Mount Magnetic Contact – White

The Honeywell 943WG is one of the smallest surface mount door or window magnetic contacts.  This is a standard two-piece design meaning the first is a reed relay and the second is the magnet.  When aligned the contact is CLOSED and when the magnet is separated by more than 1″ then the contact is OPEN.  The 943WG will work with any brand panel with a “wired” zone.  Can also be used with wireless transmitters such as the Honeywell 5816WMWH using its wired zone.

The Honeywell 943WG has 12″ wire leads and can be attached with self-adhesive strips or mounting screws (both included).  Comes in White only.  Single magnet Included.

One trick when using any surface mount contact on a window is to use a second magnet to provide “venting” on those cool breezy days or evenings. Basically you place the reed relay portion 4″ up from the sill and mounted to the window frame.  The first magnet is attached to the window sash 4″ up to align with the reed relay when the window is closed.  The second magnet is mounted at the bottom of the sash and when the window is raised 4″ to allow air into the room the second magnet aligns with the reed relay and prevents the alarm panel from thinking the window is open.  Of course if the window is raised further (or closed) an alarm will occur if ARMED.  These additional magnets can also be used with wireless transmitters such as the 5816WMWH when the transmitter is mounted 4″ up the frame.