Honeywell 955PS

3/4” Diameter Recessed Plunger Switch with Leads

Honeywell 955ps 3 slash 4 diameter recessed plunger switch with leads

Average rating:

(based upon one review)

The Honeywell 955PS is a 3/4” diameter recessed plunger switch that uses wire leads instead of screw terminals to connect the switch to a...

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The Honeywell 955PS is a 3/4” diameter recessed plunger switch that uses wire leads instead of screw terminals to connect the switch to a wired zone on your alarm control panel. You will need to splice your alarm wire to the leads on the 955PS recessed plunger switch to make a good connection. If you want an easier installation, consider the Honeywell 955PST instead as it uses staggered terminals screws for making the connection to your zone wiring. While the 955PST comes in both white (955PST-WH) and brown (944PST-BR), the 955PS only comes in white (955PS-WH).

The 955PS recessed plunger switch has an actuator that gets depressed when your window or door is closed. As the 955PS is a normally closed device, the zone circuit is closed when the actuator is depressed. Once the door or window opens, and the actuator pops out, the zone circuit will open and trigger an alarm at the alarm control panel. You should only use the Honeywell 955PS on sliding doors and windows. You need to make sure that the plunger switch can be installed in such a way that the door or window hits the plunger switch straight on. If you installed the 955PS in the door frame of a standard door, the door would hit the actuator on its side and either break the switch or the door would not be able to close. You can use the Honeywell 956RPT recessed rolling plunger switch in standard doors as it has a rounded actuator.

You will need to drill a hole with a diameter of 3/4” into the frame of your sliding door or window to install your Honeywell 955PS recessed plunger switch. After drilling the hole, you should run a wire from your alarm control panel to the hole. Use the (2) conductor 18” wire leads to connect the 955PS to your zone wire. You will need to splice, solder and tape the wires together for a good connection. Finally, push the 955PS plunger switch into the hole so that the switch is flush with the window or door frame. Only the plunger switch actuator should be sticking out. Make sure that when the door or window is closed, the plunger switch is fully depressed.

The Honeywell 955PS recessed plunger switch has a rating of 100mA at 24VDC.

Brand: Honeywell

We Prefer Rolling Plunger Switches
Submitted on 01/22/2020 Alarm Grid

The Honeywell 955PS is a hardwired recessed plunger switch contact that lets a system know when a door or window has been opened. When the door or window is closed, the plunger switch will remain pressed down. Once the door or window is opened, the switch will pop open, and the sensor will know to alert the system. This plunger switch uses wired leads instead of screw terminals. Using wired leads over screw terminals isn't really a positive or negative aspect, but it may be preferred or undesirable depending on the installer. The switch has a 3/4" diameter, and an appropriate hole will need to be drilled. However, there is a big downside to this sensor. That downside is that this sensor is not a rolling plunger switch. Some users may find that doors sometimes get caught on non-rolling recessed plunger switches, which can prevent the door from fully closing. There are plenty of other hardwired rolling plunger switches available, and most users will generally find that they provide better performance. For that reason, we only give the Honeywell 955PS a 4-Star rating.

There are some positive aspects regarding the Honeywell 955PS. As a wired door/window sensor, it does not use any batteries, and the sensor will not draw any power from the panel. Assuming that the switch does get fully pressed in when the door or window is closed, you should find that it accurately lets the system know about a door or window that has been opened. And since this is a recessed sensor, it will remain hidden when the door or window is closed. But the downsides for the sensor must also be considered. The fact that a door can get caught on this sensor is pretty disappointing, and we generally try to steer users towards rolling plunger switches for that reason. This sensor is best used on sliding doors, that don't swing closed. There is also the fact that you need to drill a hole to install this sensor, and you need to wire it to your panel. Lastly, this sensor is discontinued, and it can no longer be purchased new. We give this product a 4 Star rating because it lacks the reliability of a rolling plunger switch.

Good: No Batteries, No Power Draw, Works Reliably When Pressed Down Fully, Hidden from View

Bad: Not a Rolling Plunger Switch, Door Can Get Caught, Must Drill Hole to Install, Must be Wired to Panel, Discontinued

Bottom Line: 4 Stars

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