Roller Ball Recessed Button Pressure Reed Switch - Window/Door Alarm Contact Sensor Plunger with Terminals
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Description
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- High Quality Magnetic Contact Roller Ball Switch with Gold Plated Screws & Terminals
- Max Contact Rating: 28VDC, 0.5A, 10W
- FOR STANDARD 2-WIRE CONNECTION: Use the NO & COMM Terminals (Leave EOL detached)
- Tube: 3/4" Diameter x 2" Long - Please make sure that your doorjamb has the proper clearance!
- 1.75" x 1" Face Plate - Mounts on 2 screws (included) at 1.25" Centers
Roller Ball Recessed Button Pressure Reed Switch - Window/Door Alarm Contact Sensor Plunger with Terminals
Reviews
P**A
Works Well
We just installed this today on the inside track of a sliding door as an alarm contact and it works perfectly as described.
P**9
This is not a N/O N/C ball switch
This is just like 4 other switches I own for use in alarm systems, what I thought I was buying was a door light switch? The third terminal is for an end of line resistor required for all CMOS input alarm systems, not a normally open when closed door switch.
K**R
It's effetive
The item resolved issue with our alarm system when the wires were inadvertently cut during a construction project. The new button reconnected the alarm.
C**S
Works as advertised
Good, cheap switch
G**S
Easy to install
It was easy to replace the nonfunctioning alarm sensor in our home.
S**7
Good Buy
Works great. Easy to install.
W**G
True rollerball, works like a charm
Bought a similar sensor a month or so ago that started hanging up after a week. It was a plunger style sensor. This rollerball has been installed for 2 weeks now with zero issue. Would definitely recommend this over similar models.
S**I
This is a NC switch!!
Don't be fooled by the NO label on the contact. I put my meter on it and it gave me a short when the ball was pressed...I was looking for a switch that gave me a short in the open position.
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