A4Tech RH500 Users Manual

Wireless 2.4G HD Headset

User Guide

Model: RH-500

www.a4tech.com

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.

Federal Communications Commission Requirements
The equipment has been tested and found to comply with the limits for 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 instruction, may cause harmful interference to radio communication. However, there is no
guarantee that interference will not occur in a particular installation. If this equipment does
cause harmful interference to radio or television 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 of 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.

THE CHANGES OR MODIFICATIONS NOT EXPRESSLY APPROVED BY THE PARTY
RESPONSIBLE FOR COMPLIANCE COULD VOID THE USER'S AUTHORITY TO OPERATE
THE EQUIPMENT.
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 receiver.
(2) This device must accept any interference received, including interference that may cause
undesired operation.

FCC Radiation Exposure Statement
The equipment complies with FCC RF exposure limits set forth for an uncontrolled environment.
The equipment must not be co-located or operating in conjunction with any other antenna or
transmitter.

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Features / Specifications

Design: On-the-Head Button No.: 3
Function button for: Volume±, Power switch
Effective Range: Approximately 10 m (maximum¹)
360° full-rotational design
Frequency band: 2403MHZ-2478MHZ
Li-Battery capacity: 300mA
Talk Time: Continuous Use for Up to 8 hrs Charging time: 2 hours

GFSK Modulation type: GFSK Frequency range: 20 Hz-20 kHz SNR: 90dB

Function Description

Start up: Vertically short press [power switch], the power indicator lights up; the connection is

successful and the headset is ready for use.

Shut down: Vertically short press [power switch], the power indicator goes out and the

headset turns off.
(Note: If the connection fails for a certain time, the headset powers off automatically.)

+Volume: Turn the knob up to increase the volume, or keep turning up to continuously

increase.

-Volume: Turn the knob down to decrease the volume, or keep turning down to continuously

decrease.

Microphone: hidden denoising microphone
Low battery power warning

In low power, the headset will have a sound to remind you to get it charged.

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