Feature: 1. Signal antenna reception is worry?free, 100 meters wireless transmission, good and stable signal, strong anti?interference, don't worry about poor measurement environment. 2. Large LCD screen, test data at a glance, 4?digit LCD display, with backlight function, suitable for dim places. 3. Data storage HOLD key, one key to save the test data, so that the test is simple, you can consult the saved test data according to your needs. 4. 270?? rotating interface, the interface adopts American style, which can be rotated 270??, which is firmer and increases the variability of the test. 5. The hook type interface no longer needs to push hard, just close gently, the data is more accurate, and the jaws are more durable. Specification: Item Type: Hook Current Meter Material: ABS Color: As shown in the picture Model: ETCR9330B Measuring Range: AC 0.00A~9999A (50/60Hz automatic) Resolution: 0.01A Test Accuracy: ??2%??5dgt (The wire is located near the center of the bottom end of the U-shaped jaw, 23????2?? Jaw Size: ??130mm / 5.12in Jaw Structure: Hook type Wireless Distance: 100m / 328.1ft Stored Data: 99 groups Power Supply: DC 6V alkaline dry battery Detector: 1.5Vx4 AAA (not included) Receiver: 1.5Vx4 AAA (not included) Test Method: Non-Contact U-type CT TransmissioN Mode: 433MHz wireless transmission, the transmission distance is about 100 meters Display Mode: 4-digit LCD display, backlight function, suitable for dim places Insulation Rod Size: ??45mm / 1.77in, contracted state: 1000mm / 39.37in, extended state: 4100mm / 161.42inInsulation Rod Voltage Level: 110KV Sampling Rate: 2 times/sec How to Use . Package List: 1 x Detector(Battery Not Included)1 x Receiver(Battery Not Included)1 x Instruction Manual1 x Lanyard1 x Fixed Screw1 x Telescopic Insulating Rod1 x Cloth Bag Note: 1. Please allow 1?2in error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.