china Near vision tester
WH 0901
Technical Data
It is rechargeable, double side can use , you may select two charts .
LED Near vision tester (WH0901)
1. Import LED light
2. High quality
3. E, Astigmatism, Red and green, Honeycomb chart
Double side, another one side you may select Amsler grid, or other picture as per you need.
PACKING LIST.
One near vision tester.
One lithium battery
One USB cable
One power adapter (charger)
One stand
One pointer
Power supply
Lithium battery: 3.7V
Battery charger(power adapter) input: AC 100-240V, 50-60Hz, OUTPUT: Dc 5v, 1.2A
CHARGING TIME: 5 hours
The device can be powered by the computer with the USB cable
Near vision tester measurement: \
1. Put the vpal on the stand, adjust the gradient,
2. TURN ON THE DEVICE
3. USE THE CORD TO DETERMINE THE TEST DISTANCE OF 40CM FROM THE EYE.
CONCERNS:
1. WHEN NOT IN USE, PLEASE POWER OFF THE DEVICE.
2. Keep the surface of the Vpal clean
3. USE A SOFT AND DRY CLOTH FOR CLEANING.
TECHNICAL SPECIFICATIONS
1. TEST DISTANCE: 40CM
2. LENGTH OF THE CORD: 40CM
3. DIMENSIONS: 185*115*11MM
){kind=link}