Sentry Wireless Infrared Safety Beams for Gate Motors (15m)
Sentry wireless infrared safety beams: the transmitter runs on 2 x AA 1.5V batteries, the receiver wires to 12V or 24V at the motor. Rated to 15m with a clear line of sight. For sliding, swing and roll-up operators.
- 15mClear line of sight
- 2 x AATransmitter batteries
- 12V or 24VWired receiver
- 840nmModulated infrared
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Alectra Hatfield 648 Jan Shoba Street, HatfieldMon to Fri 07:30 to 17:00, Sat 08:00 to 17:00Get directions
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Alectra Wonderboom Braam Pretorius Street, WonderboomMon to Sun 08:00 to 16:45Get directions
Choose Pickup at checkout and we message you when your order is ready to collect, usually within 24 hours. You can pay online, or pay at the branch when you collect.
These are the Sentry wireless safety beams. What sets them apart from the Sentry wired beams is the transmitter: it runs on 2 x AA 1.5V batteries, so no cable is needed on that side of the gate. The receiver still wires to 12V or 24V at the gate motor. The pair is rated to work up to 15m apart with a clear line of sight. Sentry beams are made by Martin Electronics.
What wireless means on these beams
Only the transmitter is wireless. The receiver is wired to the motor's 12V or 24V supply, so plan a cable on the motor side. The transmitter sends a modulated 840nm infrared beam to the receiver, and when something breaks the beam, the motor is signalled to stop.
Low-battery signal on the Sentry A6 Max
The transmitter has a low-battery signal. On the Sentry A6 Max, that signal can go to the V-IRB input, so the motor knows when the transmitter batteries are running low.
Which gate motors do they work with?
Martin Electronics lists these beams for sliding, swing and roll-up operators, so they suit gate motors and garage door motors.
Wired or wireless?
- Wireless (this set): transmitter on 2 x AA 1.5V batteries, receiver wired to 12V or 24V.
- Wired: transmitter and receiver both wired to 12V or 24V, so no batteries.
Alectra Solutions supplies the equipment only.
Key features
- Battery-powered transmitter. Runs on 2 x AA 1.5V batteries, so no cable on that side of the gate.
- Wired receiver. Wires to 12V or 24V at the gate motor.
- Up to 15m. With a clear line of sight between the units.
- 840nm modulated infrared beam. From the transmitter across the opening to the receiver.
- Low-battery signal. On the Sentry A6 Max it can go to the V-IRB input.
- Sliding, swing and roll-up operators. For gate motors and garage door motors.
Specifications
| Brand | Sentry |
|---|---|
| Manufacturer | Martin Electronics |
| Model | Wireless Infra-Red Beams |
| Transmitter power | 2 x AA 1.5V batteries |
| Receiver power | 12V or 24V, wired |
| Range | Up to 15m with a clear line of sight |
| Beam | 840nm modulated infrared |
| Low-battery signal | Can go to the Sentry A6 Max V-IRB input |
| Works with | Sliding, swing and roll-up operators |
| In the box | 1 transmitter, 1 receiver |
| Sold as | One set of wireless beams |
Not in the box
- Gate motor
- Fitting (Alectra Solutions supplies the equipment only)
Manuals and documents
Questions people ask
No. Only the transmitter is wireless, on 2 x AA 1.5V batteries. The receiver wires to 12V or 24V at the gate motor.
2 x AA 1.5V batteries.
They are rated to 15m with a clear line of sight between the units.
The transmitter has a low-battery signal, and on the Sentry A6 Max that signal can go to the V-IRB input.
Yes. Martin Electronics lists them for sliding, swing and roll-up operators.
Wireless saves running a cable to the transmitter side. The Sentry wired set needs cable to both sides but no batteries.
Need it fitted? Alectra Solutions supplies product only. Ask the branch and we will point you to installers in Pretoria.