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Embedded Wireless Devices

 

900 MHz and 2.4 GHz wireless modules are now commonly used for remote monitoring in embedded systems, particularly for remote sensor monitoring. Cermetek offers both 900 MHz and 2.4 GHZ wireless modules to support these applications. The use of these wireless modules simplifies the overall system design. All Cermetek wireless modules are pre-certified and utilize simple, modem-like AT commands for control and configuration of wireless functions.



  • Certification: Cermetek RF products feature FCC Part 15 modular approval permitting use in the United States with no further testing of the RF transmitter.


  • Frequency Hopping: Cermetek wireless modules utilize frequency hopping spread spectrum technology throughout our the product line. Frequency hopping permits higher signal levels by spreading the signal power evenly across the 900 MHz or 2.4 GHz frequency band.


  • Remote Sensor Management: Cermetek wireless modules support remote sensor connections without the need for an external microcontroller. Analog and Digital sensors connect directly to the rf module. Our SensorOnAir feature allows those sensors to be read remotely.


  • Range: Range is a key parameter in measuring in the performance of a wireless network. The range of an embedded wireless devices varies with many factors including receive sensitivity, robust network management, the frequency band used, environmental interference (both physical obstructions and electrical interference), and output power. Both the hardware and firmware of the Cermetek embedded wireless modules were developed to maximize range and link reliability.


  • Evaluation Kits: Cermetek offers evaluation kits for our RF modules. The evaluation kits include a pair of 2.4 GHz or 900 MHz transceivers on adapter boards that connect to a PC serial port. The evaluation kits allow designers to evaluate our wireless modules and to develop the code to integrate these¬†wireless modules into¬†the embedded systems. The evaluation kits are priced at $295 each.
 
The Selection Guide below is intended to simplify selection of a Cermetek Embedded Wireless Device.
MODEL VOLUME
PRICING
ISM
BAND
FCC PART 15
STATUS
Tx
POWER
(mW)
PACKAGE
TYPE
DIMENSIONS (in)
L W H
CH232BGN <$50 Approved 20 dBM max Through-HOle 40 MM 25MM 8MM
CH32GGT <$80 Yes Vmin 7.6V, Ipeak 810 ma Terminal 80 mm 55 mm 23 mm
CH4390 Under $50 Modular Certification 3.3 Volts Leadless SMT 50 mm 20 mm 5 mm
XE900SL10 Below
$40
900
MHz
Modular
approval
10 Shielded
DIP
1.00 1.00 0.260
XE900S500 Below
$50
900
Mhz
Modular
approval
500 Shielded
DIP
1.295 1.41 0.255
 
 
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