2022/09/28
1. Firmware: GW-7828_105.fw
2. Fix problem: Fix over current alarm not triggering.

2021/11/23
1. Firmware: GW-7828_104.fw
2. Fix problem: Adjust the timeout value of the connection with the meter avoid connection timeout.

2021/10/07
1. Firmware: GW-7828_103.fw
2. Add function: M-Bus timeout setting. User can add M-Bus communication timeout value at default timeout.
3. Add function: Support DIF 0x0D and VIF 0x7C/0xFC
4. Add function: Modbus data swap

2021/02/02
1. Firmware: GW-7828_101.fw
2. Hardware: GW-7828 Rev1.90
3. Fix problem: Improve compatibility for support more types of meters.

2020/12/01
1. Firmware: GW-7828_100.fw
2. Hardware: GW-7828 Rev1.90