SOLAS 1974,as amended
Operation:Water activated /Manually
unit weight ：40g
Put the bracket under the fixing band of the lifejacket with its two keys towards outside, and insert the keys into the holes on the back of the light to secure the light on the lifejacket.
Automatic:YD50 lifejacket light is switched on automatically when the sensor is immersed in water;
Press and hold the switch more than 1 second and the light must flash. Operate the switch again, and the light must stop flashing.
Check the battery :Press once the switch
The battery indicator in green lightens meaning the battery in full capacity; The battery indicator in red lightens meaning the battery in poor capacity.