Has anyone ever accidentally left your freezer or fridge door open? If so, you know how serious a problem this can be. Although there are some freezer temperature alarms available, I have not come across anything like the DA-20 made by Alectro Systems.

In addition to home refrigerators and freezers, these units are also used by hospitals and other medical facilities, industry and institutions (for exit door security).

The DA-20 is very easy to install on any freezer or fridge without any tools. It will work on any appliance, upright or chest. In fact it will work on any door in your building. The Standard DA-20 has an adjustable delay circuit which allows you to keep the door open for up to 21 minutes without it responding. After this delay, it emits a loud pulsing tone to alert you to the fact that the door has been left open. Once the door is closed, it resets to its monitoring state.

Because of the delay feature, you are not forced to listen to an annoying sound while you want the door open. It will let you know when it has been left open however. The standard unit is factory preset to 5 seconds.

Due to the very low current drain, the DA-20 will probably operate for about two years, under normal use, on one 9 volt alkaline battery (included). The DA20 features a low battery warning sound as well.

These Items are new.  We manufacture them here in Canada.

Click Here for Information Datasheet

Click Here for Installation Instructions

Shipping Note: In order to offer Flat Rate shipping, we use multiple shipping methods.  We usually ship with United Parcel Services because they generally give us the best rates and service.  For remote locations, we might use Canada Post.

ACCESSORIES

The DA20 features two accessories which allow for it to be used in more versatile applications.

To view the Siren Accessory, please refer to the eBay listing at: DA20 Siren Accessory

To view the Power Supply Accessory, please refer to the eBay listing at: DA20 Power Supply Accessory