2-1/4" 7-Segment Digital Clock KitFeatures 12/24h clock system; min temp readout: celsius: -20C; fahrenheit : -4F; ; max temp readout: celsius: 70C; fahrenheit: 158F; ; auto toggle function; easy time setting; easy wall mounting; back-up battery; automatic frequency detection; unique extra feature: auto toggle between time/temp and scrolling sign 'OPEN' or 'CLOSED'; Specifications power supply: 12VAC (e.g. PS1205AC); power consumption: 250mA max. (incl. temp. sensor*); backup battery: 3V (CR2032); power consumption on backup battery: /-1mA; dimensions: 9 x 2.9 x 1.26"; Extras* optional Temperature sensor k8067 or VM132 Note - The clock will run way too fast unless you do the following: Plug it into the AC without the backup battery installed. Once the clock has locked onto the 60 Hrz, then install the backup battery.
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