Hexin Technology HXJZ-871 User Manual

HXJZ-871 Mini Power Wireless Module

User’s Manual

HXJZ-871 Mini Power Wireless Module User’s Manual

About HXJZ-871

HXJZ-871, a Mini power wireless module, is used as the wireless data transmission in short distance.
With the characteristics of small size, light weight, low power consumption, good stability and reliability,

it can provide bidirectional data transmission, test and control for users.

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.

If necessary, we can provide USB interface to make it easy to settle the question of Power Supply for
Mini computer and PC users.

Features:

1.Ultra low power transmission

The highest transmission power is 100mW, high receiving sensitivity: -121dbm,

Size: 44mm*27mm*8mm

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

Carrier frequency of 433MHz，also capable of 868/915MHz.

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

Based on the GFSK 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.

4. Long transmission distance

Within the range of visibility, the reliable transmission distance is（BER=10-3/1200bps）>800m when the
antenna is higher than 3M.

5. Transparent data transmission

Transparent data interface is offered, which can be fit for 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 change time for receiving and sending <10ms.

6. Multi-channel and speed

The HXJZ-871 provides 8 channels to meet the multiple communication combination mode of the users.

The
JZ861 Module can provide many kinds of correspondence baud rate such as 1200bps, 2400bps,

4800bps,
9600bps, 19200bps and 38400bps.

The wireless transmission speed and the connection baud rate are proportional, to satisfies the customer
equipment of different baud rate.

7. High speed wireless communication and Large data buffer

When the RF baud rate is bigger than the COM baud rate, allowing to transmit unlimited data at one time,
and when the RF baud rate is smaller than or was equal to the COM baud rate ,may transmit 255 bytes data

8. 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 receiving/transmitting the data from the interface. HXJZ-871 will automatically
complete the other operations,

HXJZ-871 Mini Power Wireless Module User’s Manual

such as transmission/receiving conversion in the air, control, etc.

9. High reliability, small and light

Single chip radio frequency integrated circuit and single chip MCU are used for lessened
peripheral circuits, high reliability, and low failure rate.

10. Low power consumption, two kinds of sleep mode.

Receiving current <30mA, transmitting current <100mA;

Sleeping mode (The user’s should asked for it):

a. Awaken from Hardware
b. Awaken from Interface.

The user can set it according to the software.

10. Watchdog monitor

Watchdog monitors the inner function, so it can change the traditional product structure and improve the
product reliability.

11.Antenna choose

Users can choose the antenna according to user’s different need .

Application of HXJZ-871

1. Dimensional drawing

Fig1. HXJZ-871 interface

chart