| Product category | DN15 | DN20 | DN25 |
| Accuracy | level 2 | ||
| Sealability | 1.6Mpa pressure of water , 15 minutes without leakage | ||
| Length | 165mm | 195mm | 225mm |
| Overload flow rate(Q4) | 3.125m³/h | 5.0m³/h | 7.875m³/h |
| Common flow rate(Q3) | 2.5m³/h | 4.0m³/h | 6.3m³/h |
| Boundary flow rate(Q2) | 0.05m³/h | 0.08m³/h | 0.126m³/h |
| Minimum flow rate(Q1) | 0.031m³/h | 0.05m³/h | 0.078m³/h |
| Starting flow rate | ≤0.012m³/h | ≤0.016m³/h | 0.020m³/h |
| Minimum reading | 0.0001m³ | ||
| Maximum reading | 9999.9999m³ | ||
| Commonly used small flow error | ≤±5% | ||
| Flow rate error | ≤±2% | ||
| Operating temperature: | 0.1℃—40℃(water meter) | ||
| Operating pressure: | 0.0——1.0Mpa | ||
| size(DN) | 15mm | 20mm | 25mm |
| Power mode | High-performance lithium battery-powered, easy to replace the battery | ||
| Working frequency | 425～435MHz |
| Effective radiated power; | 17dBm |
| Frequency stability | ±5PPM |
| Sensitivity | <-136dBm |
| Operating temperature | -20～70℃ |
| Operating bandwidth | 125kHz/250kHz |
| Operating Voltage | +2.8～6V |
| Receive current | ≤20mA |
| Mission current | ≤130mA |
| Launch time | Maximum launch time≤1.5s |
| Launch interval | Max.24 hours |
| Transmission distance | Line of sight≥5000 meters |
| Valve electrical parameters | voltage2.8～6V，current≤160mA |
| Dormancy current | ≤8uA |
| Average operating current | ≤20uA |
| Dimension | 42.1mm*24.8mm*3.2mm |
