| Technical parameter | Parameter value |
| Brand | SONBEST |
| Input Signal | Switch/Dry Node |
| Communication Interface | RS485 |
| Default baud rate | 9600 8 n 1 |
| Power | DC9~24V 1A |
| Running temperature | -30~85℃ |
| Working humidity | 5%RH~90%RH |
| Technical parameter | Parameter value |
| Brand | SONBEST |
| Input Signal | Switch/Dry Node |
| Communication Interface | RS485 |
| Default baud rate | 9600 8 n 1 |
| Power | DC9~24V 1A |
| Running temperature | -30~85℃ |
| Working humidity | 5%RH~90%RH |
Email: sale@sonbest.com
TYPE: SM1250B
WeChat: 13918126020
SKYPE: SOOBUU
Phone: 021-51083595
QQ1: 71182854 QQ2:613035997