Key Word:
JZ878 Middle Power Data RF Module
JZ878
Description:
JZ878, the Middle-power wireless transceiver data module is used as the wireless data transceiver in long-ranges, with the small size, weight and power consumption and good stability and reliability.
 * AMR Automatic Meter Reading
 * Wireless alarm and security systems
 * Home automation
 * Low power telemetry
 * Wireless conference voting system;
 * Sports training & competition;
 * Wireless dishes ordering;
 * Wireless POS, PDA wireless smart terminal;
 * Electronic bus station and intelligent traffic;
 * RF transmitter Wireless electronic display screen and queuing machine;
 * Wireless telemetry Charging for parking, parking lot;
 * Wireless modem Automobile inspection and four-wheel orientation;
 * Wireless sensor Industrial wireless remote control and air conditioning remote controller;
 * Observation and predication of oil well and hydrological information; 
  * Point to multi-point wireless network, wireless on-the-spot bus and automatic data collection system;

Technical specification of JZ878:

Serial number

Item

Parameter

Note

1

Modulation mode

GFSK

 

2

Work frequency

433mhz

 

3

Transmission power

5W

 

4

Receiving sensitivity

-123dbm(1200bps)

 

5

Channel amount

16 channels

User setting

6.

Channel interval:

25KHz

 

7

Transmitting current

<1.5A

 

8

Receiving current

<45mA

 

9

Working temperature

-2085C

C

10

Working humidity

10%~90%(relative humidity without condensation)

 

11

Antenna impedance:

50

 

12

Power supply

DC +9+15V

Representative: DC 12v

13

Dimension

109mm79mm30mm

 

14

Interface

TTL, RS232, RS485

user can choose

15

Reliable transmit distance

10-20KMm

 


Features:

1.Power and receiving sensitivity
 Transmission power: 5W, RX current: <45mA, TX current:1.5A.
High receiving sensitivity: -123dbm.
2. Modulation mode and Frequency 
 Modulation mode: GFSK, Frequency :430MHz---470MHz.
3. High anti- interference and low BER(Bit error Rate)
 Based on the GFSK modulation mode, the high- efficiency forward error correction channel encoding technology is used to enhance datas resistance to both burst interference and random interference and 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, It can transmit >20km when the antenna height is grater than 8m(BER=10-3@1200bps), and>10km(BER=10-3@1200bps)
5. 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).
6. Multi- channel
 The standard JZ878 configuration provides 16 channels to meet the multiple communication combination mode of the user.
7. High speed wireless communication and Large data buffer zone
  When the RF baudrate is quicker than COM baudrate, allowing to transmit unlimited length data at one time, when the speed rate is slower or equal the interfaces, allowing the transmission of 255 Bytes long data frames at one time for more flexible programming by users.
8. Intelligent data control and the user doesnt need to prepare excessive programs
 Even for semi duplex communication, the user doesnt need to prepare excessive programs, only receiving/transmitting the data from the interface. JZ878 will complete the other operations automatically, 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. Watchdog monitor
 Watchdog monitors the inner function, it changes the traditional product structure and also improve the reliability of our modules.
Antennas: