Wheelchair exit sensor PA-CHAIR 1 unit

If you try to get out of the wheelchair an alarm goes off and if you sit back down it stops. Since it is battery operated, you can use it anywhere. It has a low battery indicator that notifies you when the battery capacity is low. Size (mm): Sheet/290 x 290 x 12, Alarm unit/70 x 110 x 29 Volume adjustment: 2 levels (70/90dB) Functions: Alarm tempo/tone adjustment, low battery indicator Sheet material: PVC (polyvinyl chloride resin), waterproof Power supply: 3 AAA batteries (included for testing) Cord length: Sensor/0.88m Accessories: Alarm holder