Fiber optic red light pen

Output wavelength: 650nm2, output power: 1mW, 5mW, 10mW3, detection distance: 1-5km, 5-20km, 20-30km...

Output wavelength: 650nm2, output power: 1mW, 5mW, 10mW3, detection distance: 1-5km, 5-20km, 20-30km...

Output wavelength: 650nm2, output power: 1mW, 5mW, 10mW3, detection distance: 1-5km, 5-20km, 20-30km...