Lock Box For #30911 & 35911 Guardian Freedom Alert Mattress Covers This fully automatic unit features The wetness indicator turns This fully automatic unit features both Fuzzy Logic Inflation and Controlled Deflation technology * Systolic diastolic and pulse readings are displayed simultaneously on the easy to read digital display * Memory feature allows the user to recall up to 90 readings * Latex Free * Smart Read Plus w Adult Cuff * Arm Circ All you need is your training computer Prevent costly repairs due to forced entries from emergencies * Set your 4 digit code and install a spare key * Attach the Lock Box to your door or other secured fixture such as a stair railing * Call the 911 non emergency number in your area and give them the combination * Emergency services can use this spare key to quickly enter your home