Household Alert^® Works with Security System = Security100 %

These low cost Alert Products provide audio / visual indications, alert the user to things happening around the house. Ideal to work with the security system which will not alert you what is happening outside your house. (Good for the blind and hearing-impaired as well). A special "supervised feature" monitors the sensors and their battery condition. The main unit can work up to 4 sensors. Different sensors are available.