Hexin Technology HXJZ-881 User Manual

HXJZ-881 Micro Power Wireless Module

User’s Manual

About HXJZ-881

HXJZ-881, the Micro power wireless module, is used as the wireless data transmission in short distance.
With the small size, weight and power consumption and good stability and reliability, it has the function

of bi-directional data sign transmission, test and control.

It is used for Wireless meter reading, such as water meter, electric meter and gas meter, parking meter,
intellective card, electronic weighing apparatus, meter for checking on work attendance, queue wireless meter,
building control, shipping company control, alarm system, intelligent equipment, Automatic data
collecting system; Industrial remote control and remote test building automation, safety and
security, powerhouse equipment wireless monitor, entrance control system, etc. It provide the USB power
interface to be convenient
for the mini computer and PC users if necessary.

JZ8881 Feature

1.Ultra low power transmission

Transmission power ＜10mW, high receiving sensitivity: -120dbm, size: 39.4mm*24mm*8 mm.

2. Low power consumption

Receiving current<35mA, transmission current<40mA, sleeping current (the user need to ask for it before

place an order). < 1mA.

3. ISM frequency band, not requiring on application of f requency point

Carrier frequency of 490MHz，also capable of 160/230/315MHz

4. High anti-interference and low BER (Bit error Rate)

Based on the FSK modulation mode, it adopts the efficient communication protocol. The actual bit error

rate of 10-5 ~ 10-6 can be achieved when channel bit error rate is 10-2.

5. Long transmission distance

Within the range of visibility, the reliable transmission distance is（BER=10-3/1200bps） >500m when the

antenna height is greater than 2m (BER=10-3/9600bps).

6. Transparent data transmission

Transparent data interface is offered to suit any standard or nonstandard user protocol.
Any false data generated in the air can be filtrated automatically (What has been
received is exactly what has been transmitted). The charge time for receiving and sending <10ms.

7. Multi-channel and speed

The standard HXJZ-881 configuration provides 8 channels to meet the multiple communication
combination mode of the users. It has baud rate to be chosen such as 1200bps、2400bps、4800bps、9600bps、19200bps.
The

wireless transmission rate is direct ratio with baud rate of interface to meet user’s equipment requirement.

8. High speed wireless communication and large data buffer

When the speed rate in the air is quicker than interface’s, allowing to transmit unlimited length data at one
time, when the speed rate is slower or equal the interface’s, allowing the transmission of 255 Bytes long data
frames at one time for more flexible programming by users.

9. Intelligent data cont rol and the user doesn’t need to prepare excessive programs

Even for semi duplex communication, the user doesn’t need to prepare excessive

programs, only