![](https://ae01.alicdn.com/kf/S9bae68391c7a4201b29d506e3fd9743ar.jpg)
There is voltage on the MBUS bus, remind buyers to buy MBUS host must have bus protection function! Without the protection function, the USB serial port of the computer may freeze and may cause permanent damage to the USB. Our module bus can be short-circuited completely, please see the test chart!
This module contains two sets of MBUS interfaces (the same MBUS is divided into two groups), which is convenient for connecting multiple slave devices! The USB-B interface is especially suitable for frequent plugging and unplugging of production lines.
Please use the USB driver provided by our store, otherwise normal communication will not be possible!
Application field
![](https://ae01.alicdn.com/kf/Sd43c4edb04ab4fad972711c324ff1212N.jpg)
Smart energy water meter, gas meter, heat meter, smart grid meter reading application with MBUS
Smart home control, fire alarm and linkage network application with MBUS
Central air-conditioning control with MBUS, intelligent sensor network application
Module Features
1. Fully comply with MBUS international standards and national standards
2. Compatible with all win systems including win10
3, USB power supply, no need for any external power supply
4. Ultra-long communication distance, the communication distance is greater than 1200M
7. The size of the shell is small, which is convenient for on-site debugging and carrying
8. The shell does not have any text or pattern logo, the customer can engrave the logo by himself.
9. The module has no self-receiving and bit error phenomenon within the normal load range
10. Short circuit protection with low power consumption function. After the bus is short-circuited, the USB indicator goes out, and the internal bus is automatically shut down to enter the protection state. It takes about 4S to detect whether the bus is short-circuited, and the short-circuit is detected within 4S to automatically recover, and the USB indicator automatically recovers. After the module enters the protection, the power consumption is low and the USB of the computer will not die (hint: if the USB is dead, you need to restart the computer to restore).
![](https://ae01.alicdn.com/kf/S07f862dafae642fcb52841d43422dc60j.jpg)
10. The communication baud rate of 300~9600 can be adapted to a maximum of 19200bps.
11. According to the load, it can bring about 25 standard MBUS slave devices.
Provide bus voltage within the range of MBUS standard, the following is the description of MBUS standard
![](https://ae01.alicdn.com/kf/S886ab21348584bcc94ce6da1faf134c4G.jpg)
19200 communication waveform
![](https://ae01.alicdn.com/kf/S1df2c1521c814120ba42769d137259bfN.jpg)
![](https://ae01.alicdn.com/kf/S8fbf0e5fc0294c278ad20762fd817bbdQ.jpg)
Buyer`s Note:
1. The MBUS master module can only communicate with the slave module, the master module cannot communicate with the master module, and the slave module cannot communicate with the slave module. Only one host can exist on the same MBUS bus, and there cannot be two or more hosts
2. The USB power supply capability is limited. The MBUS bus can load up to 10 standard slave devices. Too many slave devices will cause the module to enter the overload protection state.
3. Bus protection function, the module will not be damaged after the MBUS bus is short-circuited, but try to avoid long-term short-circuit.
4. All interfaces of this module cannot be touched by strong electricity
5. Each module has been strictly tested, please rest assured to buy