| Technical parameter | Parameter value |
| Moisture measuring range | 0~100% |
| Moisture measuring accuracy | ±3% @25℃ |
| Moisture Temperature range | -30℃~80℃ |
| Moisture Temperature accuracy | ±0.5℃ @25℃ |
| Maximum transmit power | MAX 20dBm |
| Operating frequency | 410-441MHz Default 434MHz |
| Work mode | query mode or active upload mode |
| Communication Protocol | MODBUS-RTU Protocol |
| Sleep battery | <8uA |
| Max Current | <150mA |
| Sleep interval | 1-36000 seconds |
| Built-in battery | lithium battery inside |
| Standby duration | 2 to 5 years (collected every 30 minutes) |
| Power | DC6~24V 1A |
| Running temperature | -40~80°C |
| Working humidity | 5%RH~90%RH |
BRAND: SONBEST
TYPE: KZ21C30
Email: sale@sonbest.com
WeChat: 13918126020
SKYPE: SOOBUU
Phone: +86-021-66862075
QQ1: 71182854 QQ2:613035997