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Size:Mode 1 This security tester is designed for testing the surveillance camera. The security tester can be attached to the surveillance camera in site. Additionally, it could be used as a power supply of 12V temporarily. The wrist strap design is humanized for convenient use. Features: 3.5-inch TFT LED display screen, automatically identify and adapt PAL/NTSC standard. Adjustable brightness of screen, 5V USB charging and low power warning. Audio and video input. Built-in 3.7V 2200mAh Lithium battery, the work time can reach almost 8 hours. 12V 0.5A output power, can be used as a power supply for a camera temporarily. Audio testing function, testing voice of the front end device is normal or not. Specifications: Color: Black Material: ABS Screen: 3.5′ TFT Resolution: 320 * 240 Battery: 18650 DC3.7V 2200mAh Lithium battery Power Consumption: â¤1W Charger: AC 110-220V 5V/1000mA Video Standard: PAL/NTSC Video Input: 1.0Vp-p Power Output: 12V/500mA Audio: 0.7Vp-p Working Temperature: 5â~50â Wrist Strap Length: Approx. 26.5cm / 10.43in Power Cable Length: Approx. 80cm / 31.5in AV Cable Length: Approx. 115cm / 45.3in Monitor Size: 90 * 70 * 40mm / 3.54 * 2.76 * 1.57in (L * W * H) Monitor Weight: 150g / 5.3oz Package Size: 19 * 9 * 6.5cm / 7.48 * 3.54 * 2.56in (L * W * H) Package Weight: 347g / 12.26oz Package List: 1 * 3.5′ Security Tester 1 * Adapter 1 * Power Cable 1 * Wrist Strap 1 * AV/DC Cable 1 * BNC Converter 1 * User Manual (English)