Usage Samples: Checking for internal leaks around chimney flashing. Reading the Model number off a furnace fan motor. Retrieve a screw lost under the refrigerator. Checking the teeth on a kitchen garbage disposal. Reading the Service tag on a hard-to-reach rearplate of a server. Inspecting inside of 2" heat exchanger tubes (boiler) Examining AC coils in a residential furnace. Finding Romex installed in a closed wall cavity. Exploring the insides of a VCR. Checking Cold Air Return for debris. Checking for Lint Buildup past the primary filter in a dryer. Checking sink connections in a crowded sink space. Checking the gas connections under an installed stove. Camera specifications: Image Sensor: CMOS Total Pixels: 704576 (PAL); 712486(NTSC) Horizontal View Angle: 50 degree Transmission Frequency: 2468MHz Minimum Illumination: 0 Lux Modulation Type: FM Bandwidth: 25MHz Power Supply: 4 x AA Dimensions (W x D x H): 186 x 145 x 41(mm) (Exclude Flexible Tube) Weight(about): 530g Monitor parameters: LCD Screen Type: 2.36 TFT-LCD Effective Pixels: 480 x 240 Video System: PAL/NTSC Transmission Frequency: 2468MHz Consumption Current (Max): 450mA Video Output Level: 0.9-1.3VP-P@75ohm Dimensions (W x D x H): 100 x 70x 30(mm) Weight(About): 140g Operating Temperature: -10C to +50 C/+14F to +122F Operating Humidity (Max.): 15 to 85%RHNOTE: IMAGE® is registered trademark of Imagestore US Inc and is exclusively distributed by BrainyTrade on Amazon. IMAGE trademark is protected by US Trademark Law.