Sammons Preston Bed Sensor Pad for Hospitals, Clinics, and Home-Use, Pressure Sensitive Pad Measures 10" X 30", 180-Day Use, Monitoring Device for Nurses and Caregivers - Alarm Monitor Sold Separately

Found a guide online to turn this into a bed occupancy sensor using an Aqara leak sensor worked great! It does take a lot of pressure to trip the signal and I had to fold mine over for it to register enough pressure under my mattress. Could just be that the mattress is super soft, but it’s resting on a board, too.I use this as a sensor in Home Assistant for helpful automations.

After reading the mixed reviews, I decided to go ahead and try this based on the review posted by Scott.His review said to use the green and black wires, which was also correct for my installation. I also used the Ecolink contact sensor, as I've used these for other applications as well since they have the two post wire terminals.I paired the sensor with SmartThings and screwed the green and black wires to the terminal posts. When the bed is empty, the Ecolink sensor reports open, when I get on the bed it reports closed. I tried different positions and it was accurate each time. I'm going to go ahead and purchase another pad for the other side of the bed, then I'll be able to create automations based on the occupancy states of the bed. I have mine placed under a 4" memory foam/cotton bed topper and was worried that the weight of the topper would create false positives, but so far, it has not.The pad I purchased was the 1 year model, so hopefully it will be functional for at least this amount of time as it wasn't inexpensive. I saw a similar application from a couple of content creators on YouTube, but they used the Withings sensor. That pad is over twice as expensive and I wasn't really interested on trying this automation with that expense, then I found this pad and bought one to test. So far, so good.

1-Year Update:This has been the most reliable home automation tech I have ever purchased. One year later never an issue, never a false trigger even with the cat jumping up for an afternoon snooze, under a queen mattress, triggers immediately.~~~~~~~~~~~~~~~~~~~~~~~I purchased this relatively large 20” x 30” pressure mat to see if I could monitor the occupancy of a queen size bed using Home Assistant home automation software.The mat comes equipped with a thin ~3 foot long telephone-style cord that contains four wires terminating at an old telephone-style plug. Removing the plug with a pair of scissors, I learned by using a multimeter that the green and black wires could be terminated to a zwave contact sensor to register an open/close status when pressure is applied to the mat.I personally use an EcoLink Eco2.5 Door/Window sensor because it has two dry contact terminators inside the housing. All I needed to do was plug the green and black wires in.I placed the mat UNDER the mattress at hip level, paired the zwave sensor with my Home Assistant integration, and voila, it works perfectly. I can now use this bed’s occupancy to create automations.I was originally concerned that this mat would not register pressure if placed under the mattress, but it works absolutely fine with an adult. Based on my very anecdotal testing, it will probably work just as well with low-weight individuals such as teenagers, but obviously there will be limitations the lower the individuals weight. You will need to test that yourself. I will say, that our cat jumping on the bed does not trigger the contact sensor.We have only had this pressure pad for a few days, but at the moment, we are perfectly pleased with this purchase.

So I purchased this to build a smart bed sensor, I attached 2 half extension cables to an ESP D1 Mini (that way I could replace the pad easily later if it fails on me), installed ESPHome on it and boom a dual bed sensor, I have a Sleep Number bed, so I was able to unzip the mattress and place this in the middle of the mattress, between the foam topper and the air bladder, and it works perfect, and undetectable by me or my wife. This allows me to trigger automations differently based on someone in bed or not.

Doesn't include monitor

Arrived partially damaged - only 1/3 of the area actually detected pressure. It's a moot point for me though - it's not going to work for the purpose I intended, which is a bed occupancy sensor using ESPHome.Under a foam mattress the pressure I exerted was not enough to trigger it if I was laying flat, it would only trigger if I concentrated my weight over it. Even if it had worked it would only have worked for a limited time before the foam spacer crushed. If you're looking for a home automation sensor for a bed or chair you're better off with something like this:https://www.amazon.com/dp/B0BG8ZY6PYSince I had already modified the wiring and couldn't return it I decided to cut it open - see picture. I can't tell why 1/3 of it doesn't work. I assume there is a break in the conductive ink somewhere.

It works with Aqara contact sensor as an occupancy in home assistant.

Read the fine print. The pad has to be linked with another item to send a signal to the receiver. My mother is now gone and I donated this item to the local Nursing Home.