Hexin Technology HXJZ-878 10km-20km Middle Power RS-232/RS-485/TTL to RF Wireless Module - Manual (Page 3)

HXJZ-878 RF Data Radio User’s Manual
Even for semi duplex communication, the user doesn’t need to prepare excessive
programs, only
receiving/transmitting the data from the interface. HXJZ-878 will automatically complete the
other operations, such as transmission/receiving conversion in the air, control, etc.
10. 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.
11. Watchdog monitor
Watchdog monitors the inner function, so that change the traditional product structure and improve the
product reliability.
Main Parameters
1. Integration Parameters
Frequency range: 433MHZ
Channel interval: 25KHz
Frequency stabilization: +2.5PPM
Modulation mode: GFSK
RF Baud Rate: 1200/2400/4800/9600/19200/38400bps
Channel amount: 16
Antenna impedance: 50

Temperature: -20～85

C
Working humidity : 10%～90% relative humidity without condensation
Weight: 200g
Size: 109mm*79mm*30mm (not include antenna and Data interface)
2. RX parameters:
Receive sensitivity: -123dbm
Next channel Power: ≥ 65dB
Modulate frequency: ≤ ±5.0KHz
3. TX parameters
RF Power： 5W
Neighbour channel Power： ≥ 65dB
Change time for receiving and sending：<10ms
4. RS-232/RS485 interface
Baud rate： 1200/2400/4800/9600/19200/38400bps
Data format：8N1
5. Power supply
9-15V DC, Standard: 12V
6. Power consumption
RX current：≤ 45mA
TX current：≤ 1.5A