Specifications

• input voltage: 9-15Vdc
• max. display: 9999 (4 digits)
• addition: push "+" to add 1
• subtraction: push "-" to subtract 1
• manual operation: yes, hold + or - for 1 sec.
• reset: press reset button ('0000')
• monitor colour: red
• casing material: ABS
• current consumption: 48.7 mA ±10% (when '0000')
• standby current: 25mA max.
• light source: IR LED
• ambient temperature: -20°C~45°°C (-4°F~122°F)
• response time of speaker: chime: 1 sec - - alarm: 30sec (adjustable)
• external chime output: NPN output
• speaker output: chime/off/alarm (selected by slide switch)
• included: mounting bracket, screw and cable (10m) with twin plugs