class other | Measurement resolution | Scope of measurement | Measurement accuracy |
eCO2 |
| 400ppm~ 5000ppm | +50ppm |
ECH2O | 1Ug/m3 | 1UG~1000ug |
|
TVOC | 1Ug/m3 | 0ug~2000ug |
|
PM2.5 | 0.8ug/m3 | 5ug~5000ug | +10% |
PM10 |
| 5ug~5000ug | +10% |
Temperature | 0.01Temperature | -40 ~ 125Temperature | +0.5Temperature |
Humidity | 0.04% | 0~100% | +3%RH |
Physical interface | ZH1.5-4Sleeping seat holder | ||
output data | UART-RS485 | ||
working voltage | 5 + 0.2VDC | ||
Working current | Less than60mA | ||
Preheating time | 2 minutes | ||
working temperature | 0 ~ 50 C | ||
Working humidity | Less than 95%RH | ||
Outline size | 55.8*50*19.5mm(L * W *H) | ||
Service life | 5year(air)) |
RS485Interface definition:
Interface | Name | Function |
1 | 5V | Power supply 5V |
2 | B | RS485Data port D-/B |
3 | A | RS485Data port D+ /A |
4 | GND | Power ground |
UARTInterface definition:
Interface | Name | Function |
1 | 5V | Power supply 5V |
2 | TXD | UARTData output foot |
3 | N/A | Suspended |
4 | GND | Power ground |
communication protocol:
baud rate | 9600bps |
Data bits | 8 place |
Stop bit | 1 place |
Parity bit | nothing |
Serial Data Stream Format:
Byte | name call | say bright |
B1 | Module address | Fixed value3Ch |
B2 | version number | Fixed value02h |
B3 | data | eCO2High byte |
B4 | data | eCO2Low byte |
B5 | data | eCH2OHigh byte |
B6 | data | eCH2OLow byte |
B7 | data | TVOCHigh byte |
B8 | data | TVOCLow byte |
B9 | data | PM2.5High byte |
B10 | data | PM2.5Low byte |
B11 | data | PM10High byte |
B12 | data
|