Features: 
 Measuring single-phase AC current, voltage, active power, reactive power, power factor and frequency, to calculate the active power, measured values ??through RS485 communication transmission. 
 Optional 10 road environment temperature and humidity measuring and regulating function. Can statistical day, month, average temperature and humidity and can record the day, month, the most high-temperature humidity moment. 
 The digital display local data query 
 · Current, voltage change than can be set 
 Support the MODBUS standard protocol format, support both DL / T, the Statute of the 645 meter Statute, the user can be free to choose according to their needs. 
 Support two-way switch inputs and three-way alarm output 
 With RS485, 433MHz, SMS Three communication interface for the user to select. 
 · Excellent temperature characteristics and job stability 

 Performance indicators: 
 · Accuracy class: 0.5S 
 · Frequency withstand voltage: AC2KV/min 
 Insulation resistance: More than 50M ohm 
 Input range: current AC0 is ~ 5A, voltage AC0 is ~ 220V 
 · Relay output: 250Vac/5A, 30Vdc/5A 
 Switch input: Internal to provide power 
 · Operating environment: -40 ~ 70 ° C, 5 ~ 95% non-condensing 
 Storage environment: -50 ~ 85 ° C, 5 ~ 95% non-condensing 
 Installation: flush mount, shell size 96 * 48, the opening size of 91 * 45 

 The HS300 series single-phase multi-function power meter model defined: 
 ① Product Model code: HS300-HS300-U-HS300-P, HS300-Z optional. 
 ② switch input channels: I1, said all the way to switch inputs, I2, two-way, this feature, omit this. 
 (3) relay output configuration number: R1 represents a road, said 2-way, this feature is omitted this. 
 The ④ environmental temperature and humidity measurement configuration number: of TH1 said a road, TH2, said two-way, without this feature is omitted, the. 
 The ⑤ communication: S1 indicates the RS485 communication interface the S2 433M wireless communication interface, S3 said that SMS communication interface, without the communication function is omitted, the.