Features:
- One click automatic testing, 3.5-inch color LCD screen, brand new adhesive shell design, shock-absorbing and anti drop, ergonomic feel, compact body, eight in one function, highly integrated OTDR, optical eye, stable light source, high-power optical power meter, red light source, network cable sequence calibration, network cable length measurement, lighting function in one, quick detection of fault points, universal connector, FC/SC/ST/LC interchangeable, body 600 internal storage, expandable TF card (not included), USB data export, built-in 4000mAh lithium battery, USB charging, power bank at any time, suitable for long-term outdoor work.

Specification:
- Model: JW3302SJ
- Testing wavelength: 1550nm
- Optical fiber type: G.652 single mode optical fiber
- Dynamic range: 22dB
- Event blind spots: 3m
- Attenuation blind spot: 8m
- Measuring range: 500m - 60km
- Pulse width: 3ns ~ 10us
- Distance measurement accuracy: ±(1m + sampling interval + 0.003% x testing distance)
- Linearity: ±0.05dB/dB
- Sampling points: 16k ~ 128k
- Sampling resolution: 0.05m ~ 8m
- Reflection accuracy: ±3dB
- Data storage
Internal: ≥600 pieces
External: expandable TF card
- Laser safety level: Class II
- File format: SOR standard file format
- Optical connectors: FC/UPC (interchangeable SC, ST)

Optical Power Meter:
- Wavelength range: 800nm ~ 1700nm
- Optical connectors: Universal FC/SC/ST
- Measuring range: -50dBm ~ +26dBm or -70dBm ~ +10dBm
- Uncertainty: ±5%
- Frequency identification: CW/270/330/1k/2kHz

Light Source:
- Laser type: FP-LD
- Output wavelength: 1550nm±20nm
- Output power: ≥-5dBm
- Modulation frequency: 270/330/1k/2kHz
- Stability: CW, ±0.5dB/15min (Start up and preheat for 15 minutes before testing)
- Optical connectors: FC/UPC (interchangeable SC, ST)

VFL:
- Working wavelength: 650nm ± 20nm
- Output power: ≥ 10mW
- Working mode: CW/1Hz/2Hz
- Optical connectors: Universal FC/SC/ST

General Parameters:
- Display: 3.5-inch color LCD screen
- Data interface: Micro USB
- Expandable external storage: TF card
- Power supply method:
Polymer lithium battery: 3.7V, 4000mAh
Power adapter: 5VDC, 2A
- Battery life: Standby time > 20 hours; Measurement > 12 hours
- Working temperature: -10 ℃~+50 ℃
- Storage temperature: -40 ℃~+70 ℃
- Relative humidity: 0 - 95% without condensation
- Overall weight: ≤ 350g
- Size: 173mm x 82mm x 37mm

Package Included:
- 1 x OTDR
- 1 x Power Adapter
- 1 x USB Cable
- 1 x User Manual