The CareAlert Key Safe Lock is a strong cast steel lockable box easily mounted externally to your home with your spare house keys inside. It comes with a good quality combination lock in which you code a 4 digit PIN number. It allows anyone you trust to have access to your home without the need to hide spare keys in vulnerable positions. The Key Safe Lock compliments the "getting of help" inside the home. For example when the pre-recorded message is heard by the receiver of the emergency call they also hear the information about the Key Safe Lock location and the combination code to open it and therefore access to the house speeding up assistance whether by friends or ambulance personnel.