Zhejiang Raying IoT Technology Co. Ltd. REX3B Benutzerhandbuch
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1. Product Description
1.1 Product Introduction
REX3B is a small, high-sensitivity low-power ZigBee module. Based on the latest EFR32
platform from Silabs, the module complies with the IEEE 802.15.4 specification and the ZigBee 3.0
protocol standard. It has been widely used in smart home, building automation, industrial monitoring
and other fields.Using this module saves a lot of time effort and cost for the user's development.
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.
Please note that changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
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 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:
compliance could void the user’s authority to operate the equipment.
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 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 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.
connected.
—Consult the dealer or an experienced radio/TV technician for help.
This module is a limited single-modular transmitter without shielding case, this module must be used in the specific
host(s) and the applicable operating conditions in which the shielding case is provided by the host(s), the host(s) must
be a mobile device.
host(s) and the applicable operating conditions in which the shielding case is provided by the host(s), the host(s) must
be a mobile device.
The shielding design must fully enfold the RF circuitry - that includes shielding the top, all
sides, and the bottom. The bottom is a shielding ground plane, and must be expressly designed as an effective
shield made of materials such as sheet metal, metal mesh, or a metallic ink coated material. Any holes in the
shield must be significantly smaller than the wavelength of the radiation that is being blocked, to effectively
approximate an unbroken conducting surface.
shield made of materials such as sheet metal, metal mesh, or a metallic ink coated material. Any holes in the
shield must be significantly smaller than the wavelength of the radiation that is being blocked, to effectively
approximate an unbroken conducting surface.