Welcome to our store! 1. Simple Operation: The fiber identifier can be tested online without changing fixtures and is universal for single-mode and multi-mode. 2. Multi-Frequency Identification: The optical fiber identifier can identify 270Hz, 1KHz, 2KHz signal frequencies. 3. Buzzer Prompt: The handheld optical fiber identifier has a buzzer sound indication when identifying the frequency. 4. LED Light Direction Display: This fiber identifier can accurately identify the fiber direction as the LED indicator light can show left and right. 5. Excellent ABS Material: The optical fiber identifier is made of high-quality ABS material, has high strength, is not easy to damage, is robust and durable. Item Type: Optical Fiber Identifier Material: ABS Battery: 1.5V 2 x AA battery (not included) Application: Optical fiber identification Basic Parameters: Wavelength Range: 800-1700nm Signal Identification Type: CW, 270Hz±5%, 1KHz±5%, 2KHz±5% Detector Type: Diameter 1mm InGaAs 2 pcs Adapter Fiber Type: Universal diameter 0.25 (bare fiber), 0.9, 2.0, 3.0 fiber jumper Signal Direction: LED indicates left and right direction Optical Power Reading Range: -40dBm to +10dBm Signal Frequency Range: 270Hz, 1KHz, 2KHz Red Light Test Wavelength: 650nm±10nm Red Light Output Power: >10mW Working Temperature: -10℃ to +60℃ Storage Temperature: -25℃ to +70℃ 1 x Optical Fiber Identifier 1 x Manual 1 x Storage Bag Customers are our top priority. If you encounter any problems with your product after receiving it, such as damage or incorrect quantity, please contact us immediately. We strive to provide you with the best after-sales service.