ITEM NAME:3 1/2 Digital Red LED DC 20V Volt Voltmeter Panel Meter A4H7 3 1/2 Digital Red LED DC 20V Volt Voltmeter Panel Meter A4H7 A 3 1/2 LED DC voltage meter Polarity reversed protection High precision and stable Low power consumption Housing with self-lock tips for panel mounting Bright red LED display Model: GDD5135A-DC20V-P12V Power Voltage: DC6-15.5V Measurement Range: 0 ~ 20V DC Display Range: 0 ~ +/-19.99V Resolution:+/-0.01V Sampling Time: 2.5 seconds Operating Temperature: 0 ~ 50 deg C Temperature Coefficiency: less than 50PPM Overrange Indication: 1 is displayed Running Current: less than 50mA Display: Red 0.56 inch LED Outline Size (L x W x H): Approx. 3.1 x 1.7 x 0.8 inch / 79 x 43 x 21mm Screen Size (L x W): Approx. 2 x 0.9 inch / 51 x 24mm Housing Material: ABS LED Color: Red Housing Color: Black Caution: Please be reminded that some of the parts are with high voltage; don't touch the parts of the panel Package Includes: 1 x LED DC Voltmeter 1 x Connecting Cable Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm..Bright red LED display. LED Color: Red. don't touch the parts of the panel. Screen Size (L x W): Approx. Housing Color: Black. Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing.