1、Some features only need to be completed by pressing a single button 2、The light of the key lamp 1-12 represents the state of the real zone number 1-12 or 13 -24, simple and easy to understand 3、Controlled by a reduced instruction set microprocessor 4、Adjustable luminous brightness, 4 doorbell zones can be set, 3 groups of emergency alarm buttons 5、Fireproof enclosure, more safe to use Feature: Some features only need to be completed by pressing a single button. The light of the key lamp 1-12 represents the state of the real zone number 1-12 or 13-24, simple and easy to understand. Controlled by a reduced instruction set microprocessor. Adjustable luminous brightness, 4 doorbell zones can be set, 3 groups of emergency alarm buttons. Low power consumption, with AC display. Fireproof enclosure, more safe to use. Specification: Condition: Brand New Material: Plastic Color: As Picture Show Size: Approx 135*97*32mm/5.3*3.8*1.3in Package Weight: Approx 192g Package List: 1 * Burglar alarm system keyboard 1 * Digital card 1 * User Manual Note: 1. Please allow 1-3cm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. 3. This product can only be used with for Paradox alarm host.