Height alarm for ramp...

[duncancallum]

Any ideas on an Alarm or kill switch, ive bought a scissor lift and i want to ensure i dont fire the car into the roof.

I wondered if a parking sensor kit would work or if anyone had any other bright ideas?

[GreenV8S]

Depending on the design of the lift itself, perhaps you could put a limit switch on the mechanism. You may even find that feature has been designed into it. This would rely on knowing the height of the vehicle.

[duncancallum]

I have a few cars hence wanting a sensor rather than capping the lift off.

Might just strap a ballon to the roof😄

[sam.rog]

Someone I know (proper bodger and tight as anything) had a big emergency stop button with a sponge taped to it on the roof of his shed.
I asked why it was there and he showed me. It stopped the lift when his old defender hit it.

[sam.rog]

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[eltax91]

sam.rog said:

Someone I know (proper bodger and tight as anything) had a big emergency stop button with a sponge taped to it on the roof of his shed.
I asked why it was there and he showed me. It stopped the lift when his old defender hit it.

Simple, cheap and effective. The other option is a doorbell. An old fashioned one with a pokey-out button, glue something larger to the button?

A big plastic hockey puck sized thing, my kids have a plastic hickey okay set which the ‘puck’ would work.

[chrisch77]

If you want to do it properly I would be looking for already made optical ‘break beam’ sensor based alarm like these: https://www.easylinkuk.co.uk/product-photoelectric...

This assumes you could permanently mount the sensor/receiver at a safe distance from the roof, so when any vehicle on the lift breaks the beam the alarm with sound.

[Belle427]

Various limit switches are available that will do what you suggest in different ways. Something like the below.
https://www.switchelectronics.co.uk/products/ip65-...