This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This
device may not cause harmful interference, and (2) this device must accept any interference received, including
interference that may cause undesired operation.
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to
part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference
in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular installation. If this equipment does
cause harmful interference to radio or tele- vision reception, which can be determined by turning the equipment
off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
Note: The Grantee is not responsible for any changes or modifications not expressly approved by the party
responsible for compliance. such modifications could void the user’s authority to operate the equipment. The
device has been evaluated to meet gen eral RF exposure requirement.
To maintain compliance with FCC’s RF exposure guidelines, the distance must be at least 20 cm between the
radiator and your body, and fully supported by the operating and installation configurations of the transmitter and
its antenna(s).
Button Operations:
Volume Up (+) Button Power/On-Off Button Volume Down (-) Button
FCC WARNING
WARRANTY
AUDIO INPUT LEVEL
EARMOR ® M31 Plus is warranted to be free of defects in material and workmanship for a period of 1 year from
the date of original purchase.
The warranty is nullified in all of the following situations:
1. The product(s) is/are broken down, reconstructed and/or modified by unauthorized parties.
2. The product(s) is/are damaged through improper use.
3. The product(s) is/are damaged by leakage of batteries.
The audio level in the hearing protector is dependent on the audio input level.
To prevent harmful noise levels, the hearing protector audio levels is limited to 82dB when connected to a Personal
Music Player (PMP). If the hearing protector is connected to a PMP or other device with very high output level ,it is
the user’s responsibility to set the audio input level to a safe level.
Operation List:
Action Button Headset Status Sound Prompt
Power On Press and hold the Power
Button for 2 seconds Off State “Power On”
Power Off Press and hold the Power
Button for 2 seconds On State “Power Off”
Volume Adjustment Click Volume+/- Button On State
Five volume levels available.If at the maximum/minimum
level, sound prompts “DeDe” (max volume)/ “DuDu” (min
volume)
Auto-off after 4 hours Auto power-off after 4 hours
without any operations Standby State
Low Battery Alert Battery voltage at 2.55V
signals a low battery alert On State “Battery Low”
Low Battery Shutdown Battery voltage below 2.45V
triggers auto shutdown On State “Power Off”
Product Specifications Model/Specification Parameter
Pick-up Characteristics
Activation Noise Reduction Level 82db
Noise Reduction Value 22dB
Microphone Sensitivity -42dB±2dB
Pick-up Pattern Omnidirectiona
Speaker and Microphone
Components
Speaker Dynamic Coil
Speaker Impedance 32 OHM
Speaker Size 30mm
Speaker Rated Power ≈30mW
Speaker Frequency Response Range 20Hz-20KHz
Audio Plug 3.5mm AUX Input
Operating Time Duration 60 hours
Working Temperature Range -20~60°C
Storage Temperature Range -40~70°C (Use after returning to
operational temperature)
Power Source 2 x AAA Batteries
Materials ABS+POM+Metal
Net Weigh 295g±10g
