Amcrest Technologies WLD895 2.4GHz Digital RF Module User Manual Go Link
Amcrest Technologies LLC 2.4GHz Digital RF Module Go Link
User Manual rev.pdf
Amcrest Technologies LLC
Date: 2015/3/17
Preliminarydatasubjectstochangewithoutnotice
1
WLD895
2.4GHz Digital RF Module
A. Features
Operating frequency range from 2400 to 2483.5 MHz
Maximum data rate 4 Mbps (GFSK)
Support 3-wire or 4-wire SPI.
Modulation scheme : FSK/GFSK
Power supply range: 3 ~ 3.6V
Transmission range: 250 m (Line of sight)
Outline: 26.16x 18.36 x 3.75 m
Host equipment power supply: DC 9V
B. Applications
Digital Baby Monitor
Wireless Video Door phone
Security Camera
Amcrest Technologies LLC
Date: 2015/3/17
Preliminarydatasubjectstochangewithoutnotice
2
WLD895
2.4GHz Digital RF Module
C: Specification
Parameter Min. Typ. Max. Unit
Electrical Section
Supply Voltage 3 3.3 3.6 V
Supply current in TX mode TBD mA
Supply current in RX mode TBD mA
Crystal 16M Hz
RF Section
Modulation Mode FSK/GFSK
Operating Frequency(Note1) 2400 ~ 2483.5 MHz
Data Rate 4M bps
Transmitter Section
Transmission Power +17 dBm
Power control range 0~19 dB
Receiver Section
Sensitivity -85 -88 dBm
Operation
Operating Temperature -20 ~ +70 ℃
Storage Temperature -40 ~ +85 ℃
Note: 1. 2.4GHz ISM Band
Amcrest Technologies LLC
WLD895
2.4GHz Digital RF Module
Date: 2015/3/17
D: Pin Assignment
No. Marks Function
1 VCC Power Supply
2 CKO CKO pin output
3 GPIO2 GPIO2/4-wire SPI data out
4 GPIO1 GPIO1/4-wire SPI data out
5 SDA SPI Data I/O
6 SCK SPI Clock
7 SCS SPI Chip select
8 TX_SW RF front end TX switch
9 RX_SW RF front end RX switch
10 GND Ground
RF Front End Control:
Preliminarydatasubjectstochangewithoutnotice
3
Amcrest Technologies LLC
WLD895
2.4GHz Digital RF Module
Date: 2015/3/17
Preliminarydatasubjectstochangewithoutnotice
4
Federal Communication Commission Interference Statement
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.
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 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.
FCC Caution: Any changes or modifications not expressly approved by the party responsible for compliance
could void the user's authority to operate this equipment.
This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
Radiation Exposure Statement:
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This
equipment should be installed and operated with minimum distance 20cm between the radiator & your body.
Amcrest Technologies LLC
WLD895
2.4GHz Digital RF Module
Date: 2015/3/17
Preliminarydatasubjectstochangewithoutnotice5
This device is intended only for OEM integrators under the following conditions:
1) The antenna must be installed such that 20 cm is maintained between the antenna and users, and
2) The transmitter module may not be co-located with any other transmitter or antenna.
As long as 2 conditions above are met, further transmitter test will not be required. However, the
OEM integrator is still responsible for testing their end-product for any additional compliance
requirements required with this module installed
IMPORTANT NOTE: In the event that these conditions can not be met (for example certain laptop
configurations or co-location with another transmitter), then the FCC authorization is no longer
considered valid and the FCC ID can not be used on the final product. In these circumstances, the OEM
integrator will be responsible for re-evaluating the end product (including the transmitter) and
obtaining a separate FCC authorization.
End Product Labeling
This transmitter module is authorized only for use in device where the antenna may be installed such
that 20 cm may be maintained between the antenna and users. The final end product must be labeled in
a visible area with the following: “Contains FCC ID: ZZ2WLD895”. The grantee's FCC ID can be used
only when all FCC compliance requirements are met.
Manual Information To the End User
The OEM integrator has to be aware not to provide information to the end user regarding how to install
or remove this RF module in the user’s manual of the end product which integrates this module.
The end user manual shall include all required regulatory information/warning as show in this manual.