DH20 Diving Headlamp
User Manual

DH20 Diving Headlamp

Troubleshooting methods:

1. Remove the insulating tab at the end of the battery
2. Install the battery correctly according to the instructions, with the negative terminal of the battery facing the flashlight cover end
3. If the above operations are correct, press and hold the switch for 5 seconds. (With the lock function switch, long press for 5 seconds to lock/unlock)
4. If you follow the above steps correctly and the headlamp still does not work properly, you can use a multimeter to measure whether the battery voltage is normal.
5. If the flashlight still can not be used properly, please contact us in time, we are online for you 24 hours.5. If the flashlight still can not be used properly, please contact us in time, we are online for you 24 hours.

USER MANUAL
DH-20
shenzhen Professioner technology Co., Ltd

1. Product introduction
PFSN OH-20 is a professional underwater diving headlamp that can be widely used for any underwater activities. It perfectly combines high output with a long beam distance. Using an CREE XM-L2 LED, the light provides 1200 lumens in maximum brightness at G000K color temperature . Super focused 8° beam angle allows you to peer into crevices to find hidden critters! Powered by 1PCS of 21700 4800mAh rechargeable batteries, come with a USB rechargeable charger, it’s easy for you to charge it anywhere. Press button on/off provides easy operation when you diving.
Built-in smart chips provide low battery warnning to ensure you are safe underwater.
In a word, DH-20 has novel design that can friendly meets your underwater illumination requirements. It’s a must-have primary dive light for recreational diving, and back-up light for deep diving.
2. Feature introduction
A. 3 in 1: Can be worn as a diving headlamp on your forehead, Clip on diving mask or strap on your hand as a diving flashlight or a standard flashlight clipped to somewhere.
B.Super Bright Diving Light : XM-L2 LED emits 1200 jumens of brightness with a visible beam distance up to 200 meters.
C.IPX68 waterproof rating, every dive flashlight you receive has passed the water pressure test of 80 meters underwater.
D.Support 2- 12 Hours Running Time, 2 times higher capacity than other products in the market.
E.4 modes: high light- 1200 lumens, medium light- 800 lumens, low light- 200 lumens, Strobe- 1200 lumens
F. The package comes with 2 batteries (4800mAh), powered by 1 battery and the other as a backup battery.
G. Power indicator: Built-in power indicator to show the battery life.
H. Built-in smart chips provide low battery warming to ensure you are safe underwater.
3. Operation instruction (procedure)
A. Before the first use, please remove the insulating plastics at the rear of the battery —it’s a protection measure taken to avoid the danger caused by battery electric leakage in the transportation process.
B. Firstly please load the battery into the charger and then judge if the battery has been fully charged according to the color of the indicator light after the indicator of the charger is on (The red light indicates the low battery and the green light indicates the full-charged. It’s proper to charge the battery for 8-10 hours. The charger itself is equipped with an overcharge protection chip).
C. Switch ON: Tightening the tail cover after inserting the battery, then press the switch to select the brightness in need.
D. The headlight comes with 2 headbands, the long one is used as a headband (as a headlight) and the short one is used as a wristband (as a flashlight)

. When the diving activity is over, please wash the headlamp with water and

dry it. Take out the batteries and give them a full charge in time, which can effectively prolong their service life.

. After use, please apply grease to the waterproof ring in time, which can

effectively prevent its aging and wear.

. When the waterproof ring has signs of wear, please replace it in time to

ensure the waterproof performance of the flashlight.

Main features

1. Multiple safety protection: Built-in safety protection chip, anti-reverse connection, anti-short circuit and anti-over discharge to ensure the service life of the headlamp and the battery.
2. Memory function: the headlamp has a built-in setting memory chip, it will return to the last used setting without having to cycle through all the settings again to select.
3. Switch lock function: In order to prevent unintentional opening of the light and depleting the battery, and the switch is designed with an electronic lock, when the switch is locked, the switch cannot be turned on normally.

Light mode setting:

1. Click the switch to start the low light mode (15%) — medium light mode (70%) — high light mode (100%), in this cycle.
2. Quickly double-click the switch to start the 3Hz strobe function.
3. Press and hold the switch for 1 second to turn it off at any setting.
4. Long press the switch for 5 seconds to lock the switch, the main light and indicator light will flash 2 times, then long press for S seconds to unlock. When the switch is locked, you will not be able to turn on the light.

Power indicator function :

1. Click the indicator light shows blue light when the voltage is at 4.2-3.2V.
2. red light is displayed at 3.2-2.9V
3. in 2.9-2.8V when the red light flashes.
4. 2.8V or below, the power is automatically shut down.

If you are not 100% satisfied with our products, please don’t hesitate to contact us via the E-mail and we are 24 hours online to serve you.

TEL:+86-13685982833
E-mail:Support@pfsntech.com
Website:www.pfsntech.com
Postcode:518000
Address:2-18A Hengyunhaoting,
Fuhuasanlu, Futian District,
Shenzhen City, Guangdong Province, China

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