Sentec
SENTEC - Model SEM256 -Digital display type RS485 analog quantity temperature and humidity transmitter
FromSentec
DC power supply (default)
10~30V DC
Maximum power consumption
RS485 output
0.4W
Precision A
humidity
±2% RH (5% RH~95% RH, 25°C)
temperature
±0.4°C (25°C)
Precision B (default)
humidity
±3% RH (5% RH~95% RH, 25°C)
temperature
±0.5°C (25°C)
Long-term stability
humidity
≤1%RH/y
temperature
≤0.1°C/y
Response time
humidity
≤8s (1m/s wind speed)
temperature
≤25s (1m/s wind speed)
Transmitter circuit operating temperature and humidity
-40°C~+60°C, 0%RH~80%RH
Signal output
RS485 output (standard Modbus-RTU protocol)
Device communication parameters
The default address code is 1, the default baud rate is 4800 (can be modified by the configuration software)
Protocol frame format
No parity, 8 data bits, 1 stop bit (N, 8, 1)
Temperature range
-40°C~+80°C
Humidity range
0%RH-100%RH