Computer Accessory Sets features: HT-30 30mW Visual Fault Locator Detector Tester Optical Laser Red Light Test Pen Color: we send based on the color or size of the main image of the product page. Quantitywe send based on quantity on title, if there is no quantity in the title, we send based on . Feature: 1. Aluminum alloy body, sturdy and durable. 2. Apply the FC / ST / SC interface. 3. Economic tools for fiber tracking, fiber routing, and continuity switching during and after installation. 4. Find the breakpoint, the connection is poor, and the fiber is bent or cracked. 5. Slide switch design control cable tester. 6. Continuous wave and pulse mode, constant output power. 7. Strong light source and penetration, stable performance. 8. Dust-proof design keeps the fiber connector clean. 9. Pen design, small size, light weight, easy to carry and carry. Specification: 1. Output wavelength: 650nm. 2. Output power: more than 30mw. 3. CW frequency: 2HZ. 4. Laser type: LD. 5. Connector: Universal connector. 6. Operating temperature: 0 to 60 degrees Celsius. 7. Storage temperature: -20 to 70 degrees Celsius. 8. Power: 2 x AA batteries (purchased by yourself). 9. Size: about 17.5x2.6cm.