Darkhorse D21S PRO fiber fusion splicer
The D21S PRO is a 4-motorV-groove Clad Alignment fiber fusion splicer engineered for precise, low-loss splicing in both outdoor and indoor optical fiber projects.
Item NO.: D21S PRO
Product Origin: Designed by Darkhorse in Korea,Assembled in China
Color: Orange & Black
Shipping Port: Qingdao, China
Lead Time: 3–5 working days (stock units); 7-10 working days (OEM orders)
MOQ: 1 set
Net Weight: 1.6kg (with battery)
Dimension (W×D×H): 510*360*290 mm
Certification: CE, UKCA, RoHS
Product Details
The D21S PRO is a Active V-groove Clad Alignment fusion splicer designed for FTTH, access network and trunk-line construction. It delivers low splicing loss, fast splicing and heating cycles, a long-life 5200 mAh battery and a rugged field-ready housing. The auto-operating system, 5-inch touchscreen and universal spare parts make it easy to learn, operate and maintain — a cost-effective choice for daily optical fiber cabling work.
Specifications
| Item | Specification |
| Fiber Alignment Mode | Active V-groove Clad Alignment(4 Motors) |
| Applicable fiber diameter | 0.25mm/0.9mm/2.0mm/2.4mm/3.0mm/lndoorCable |
| Typical Splice Time | 7s(Quick mode:5s) |
| Typical Tube Heating Time | 15s(45mm),20s(60mm) |
| Typical Splice Loss | 0.02dB(SM)/0.01dB(MM)/0.04dB(DS)/0.04dB(NZDS)/0.02dB(G.657) Measured by cut-back method relevant to ITU-T and IEC standards. |
| Battery Capacity | 5200mAh |
| Welding and heating cycles | Typical 260 cycles of splice/heating per battery full charge |
| Operation Condition | Altitude 0~5000m above sea level,Humidity 0~95%RH,-10~50℃,Wind 15m/s |
| Automatic Calibration | Automatic ARC Calibration depends on pressure and temperature |
Q1: Can this splicer work with indoor drop cable?
A: Yes. The standard fixture fits 0.25mm~3.0mm fibers, including common indoor drop cables. No extra fixture is required.
Q2: How many working cycles can a full battery support?
A: The 5200mAh battery supports around 260 times of splicing and heating. It can meet one full day’s outdoor work. You can also use AC power directly.
Q3. What causes high splicing loss and how to fix it?
A: Main reasons: dirty fiber or uneven cut end, contaminated V-groove or lens, worn electrodes. Solutions: Re-prepare an clean fiber, run dust inspection, replace electrodes and calibrate discharge.
Q4: Can it work in extreme temperature?
A: The working temperature range is -10℃ to +60℃, suitable for most outdoor scenes. Preheat the device in extremely cold areas for better battery performance.
Q5: How often should electrodes be replaced?
A: We suggest replacing electrodes after 4500 discharges. The machine will send a reminder after 5500 discharges. Worn electrodes will lead to poor splicing quality.
Q6: Can I export the splicing records?
A: Yes. You can export history records and images to computer via Type-C port for project filing and acceptance.
Q7: Is it friendly for new operators?
A: Absolutely. The auto-operating design and simple interface make it easy to learn. We also provide operation videos and user manuals for guidance.
Q8: What about after-sales support?
A: We provide official warranty for the main unit. Professional technical team offers remote troubleshooting, software upgrade and lifelong consultation. Original spare parts are available at any time.
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