User's Manual

HPD OPERATING INSTRUCTIONS
1. After installation of batteries and fitting, Press the on/off button to turn on.
when unit is in “On” position. A click indicates unit is “on” and visible light from the LED verifies.
2. Increase volume gradually until sounds from surroundings can be heard.
3. Amplification of surroundings is interrupted when there are bursts or impulse noises at unsafe
levels.
BLUETOOTH OPERATION
1. On your smart device, locate “Settings.”
2.Within “Settings”, select Bluetooth, then ‘Scan for Devices’. While your smart phone is scanning
for Bluetooth devices,press and briefly hold the Bluetooth button of 1099596 bluetooth earmuff
on the front of the right ear cup . You will hear short mute and four alert tones indicating，and
white LED flashes quickly,and the Bluetooth of the ear muff is activated for pairing.
3. On your smart phone, look for the CALDWELL Bluetooth device and ‘Pair’. When the Electronic
Ear Muffs are successfully paired, and one”beep”tone can be heard ,the LED on the ear cup will
flash slower than that in pairing mode. The smart phone should also show that the CALDWELL
device is paired.
4. The conversion between bluetooth mode and HPD mode by short press the “On/Off”key.
5. Use the volume control on the smart phone to increase or decrease volume.
IMPORTANT CARE AN OPERATION INFORMATION
1. Do not alter or modify any part of this hearing protection device.
2. The outside of the ear muff can be cleaned with a mild soap or disinfectant, or a slightly
dampened cloth.
3. Do not store the device where temperature may exceed 130 degrees Fahrenheit.
4. Do not store the device where temperature will stay below 32 degrees Fahrenheit.
5. Exposure or contact with certain chemicals or vapors may cause damage to this unit.
6. Replace the batteries when a decrease in performance or volume occurs.
7. If the ear cushions are damaged, hard or deteriorated, hearing protection performance can be
compromised.
8. When not in use, ensure that the unit is powered off.
9. If the unit will not be in use for an extended period, remove the batteries to protect the device
from potential corrosion
and damage.
FAILURE TO FOLLOW WARNINGS MAY RESULT IN PERSONAL INJURY, INCLUDING HEARING LOSS
Improper fit of this device will reduce its effectiveness in attenuating noise. Consult the enclosed
instructions for proper fit. The level of noise entering a person’s ear when hearing protection is
worn as directed is closely approximated by the difference between the A-weighted
environmental noise level and NRR. Example:
1. The environmental noise level as measured at the ear is 92dB (A).
2. The NRR is 24 decibels (dB).
3. The level of noise entering the ear is approximately equal to [92dB(A) – 24] 69dB(A).
CAUTION: For noise environments dominated by frequencies below 500Hz the C-weighted