Features: This tone generator kit is made of plastic materials, durable, wear resistant and corrosion resistant Insulated probes and built-in speakers are effective in avoiding short-circuiting of conductors and make it safer to use. This 200EP Inductive amplifier is widely used for cable and wire maintenance. The measurement area includes line tracking, short circuit test, and clear/busy/ringing identification. For non-terminal cables, the clamp mode can be used for direct measurements as well as telephone and network line measurements. You can choose continuous or adjustable generator, the method is simple, and the test result is accurate. Specifications: Material: plastic Color: black Size(L x W x H):about 231x55x28mm Gain: nominal 30dB Input impedance: nominal 100M Ohm Probe tip resistance(min): Metal tip: 0 Ohm Plastic tip: 300 Ohm Battery: 1 x 9V battery(not included) Temperature: celsius: 0 - 50 Fahrenheit: 32- 122 Package included: 1pc x cable tester 1pc x receiver 1pc x launcher 1pc x cloth bag 1pc x English manual 1pc x spare head Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 0.5-2 cm differences due to manual measurement. Note: 1.Due to the difference between different monitors,the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures,,but not the same performance on different bodies as on the model. 2.Compare the detail sizes with yours,please allow 2-4cm differs due to manual measurement for the clothes, thanks All measurement in cm and please note 1cm=0.39inch 1)