HS501 series digital temperature and humidity sensor 
 HS501 series digital temperature and humidity sensor with a standard RS-485, one-Wire bus, the UART / TTL serial communication interface. HS501 series digital temperature and humidity sensors using recursive average filtering method combining digital filtering and hardware circuit filter to the outside world as to minimize the interference of sampling the full range of high precision, stability, consistency, speed of response fast. The RS485 through the standard, one-Wire bus, the UART / TTL serial interface with the computer multi-point temperature and humidity measurement system, the communication protocol is the use of industrial equipment used MODBUS-RTU protocol. 
 Technical parameters: 

 Working power supply: 5VDC ± 10% 12VDC ± 10% DC8V 36V 
 Operating Environment: Humidity: 5 ~ 95% RH non-condensing 
 Temperature: -40 ~ 80 ℃ 
 Case Material: ABS plastic 
 Installation: rail mounting or wall-mounted installation 
 Shell size: 65X45X28mm 
 Temperature range: (0 to 80) ° C (-20 to 60) ° C (-40 to 80) ° C 
 Humidity measuring range: humidity capacitance sensor: 5% ~ 99% RH humidity resistance sensors: 20% ~ 90% RH 
 Humidity Sensor: Humidity Capacitance HS1101 humidity resistance. 
 Operating Temperature: -40 ~ 80 ℃ reaction time (ta): a typical value of <5s 
 Long-term stability: a typical value of 0.5% RH / year 
 Humidity measurement accuracy: ± 3% RH (20 ~ 95% RH, 20 ° C, humidity capacitance) ± 5% RH (20 to 95% RH, 20 ° C, humidity capacitance) 
 Temperature measurement accuracy: ± 5 ℃ 
 Output signal: 1, RS485 interface, UART / TTL interface, one-Wire bus 
 Communication protocols: the standard MODBUS protocol, custom protocols, user-selectable. 
 HS501 digital temperature and humidity sensor model definition: 



 Humidity sensor type: TC said capacitive humidity sensing, TR said humidity resistance 

 2 Operating voltage: D05 said DC5V, the D12 has said DC12V D36 at to said DC8V ~ 36V 

 3, communication interface, said: S1, said: RS485 communication interface, S2 TTL interface, S3 oneWire bus interface