Instruction Manual

HXJZ-874 Mini Power Wireless Module User’s Manual
HXJZ-874 parameters setting
HXJZ-874 have the interface of USB. HXJZ-874 main parameters: COM baud rate and verify ，RF baud rate,
Channel and frequency. You can change these parameters by our RF Module soft. When RF baud rate is faster
than COM baud rate, one frame can transmit limitless data. When RF baud rate is not faster than COM baud
rate, one frame Can transmit 255 bytes most. You can set the rate according your need. The general Power
supply is 5V DC (USB supply).Note: Don ’t use USB extend line, or the power is not enough.
Two HXJZ-874 communicate must have condition as follows:
1. Their channels (i.e. frequency) are same.
2. Their RF rates are same.
3. COM baud rate and verify agree with its equipment o r PC that it connects with.
Parameters default value:
Channel：5
Interface speed rate：9600BPS
Interface verify：none
Speed rate in air：9600BPS
Channel and frequency list
Channel
Frequency
Channel
Frequency
1
430.2000MHZ
9
458.5250MHZ
2
431.4288MHZ
10
459.1250MHZ
3
431.7360MHZ
11
459.5250MHZ
4
430.5072MHZ
12
460.1250MHZ