Alphanumeric LCD keypad via bidirectional radio with proximity reader compatible with PowerSeries Pro Grade 3 system. 2x16 characters display. Intuitive clock programming. Multiple door buzzer. Blue screen. White backlit keys. Shows outside temperature. Installer programming. Multi-language. 5 programmable function keys. Fire, medic and panic keys. Tamper protected. Proximity reader compatible with MPT mini prox tags. Powered by 4 AA alkaline batteries. Shelf life 2 years. Dimensions: 124 × 170 × 36 mm.