Similar to the Sleep Sentry and a fraction of the cost of the Diabetes Sentry, this precision monitor can detect 2 common symptoms of low blood sugar during sleep. It is a self contained device that incorporates two sensors located on the rear of the product, which is designed similar to a wrist watch. These sensors, when in contact with the skin of the wrist or ankle, respond to perspiration and body temperature (cold sweats) which are two common symptoms of low blood sugar. If a cold sweat is detected, a built in vibrator operates along with a tone beeper alarm.

The persistent vibration from the alarm is sufficient to disturb most users from sleep, enabling a blood test and remedial action to be taken quickly. This alarm is for use when sleeping - it is not intended to be used as a day time alarm.

The device has a comfortable adjustable elastic strap that exerts sufficient pressure to hold the sensors firmly against the skin. The outer case is manufactured from a durable ABS material that is durable and long lasting. The only ongoing maintenance required is to replace the lithium 3V battery (CR2032) - which is likely to be required a couple of times a year. There is a low battery warning tone to advise of battery replacement requirement. Operation of the alarm is very simple and it provides confirmation beeps for button operation, so is also usable by those who may be sight impaired.

Note1: It is normal for your device to sound occasional false alarms. These can be minimized by ensuring the band remains snug during use or wearing on the ankle to keep at a constant temp under blankets.