# Alfamart API ## Sensor ### **1.Voltage** Electric voltage in cable R,S and T got from sensor, and is expressed in volts. **Method:Publish** **Topic** ``` {Location ID}/{Device Name}/volt/{volt} ``` **Parameter** |Name|Example| |-|-| |volt(R-S-T)|216.2-223.1-227.2| **Example** ``` 123XYZ/AC/volt/216.2-223.1-227.2 ``` ### **2.Current** An electric current in cable R,S and T got from sensor, and is expressed in ampere. **Method:Publish** **Topic** ``` {Location ID}/{Device Name}/curr/{curr} ``` **Parameter** |Name|Example| |-|-| |curr(R-S-T)|10.2-11.7-9.2| **Example** ``` 123XYZ/AC/curr/10.2-11.7-9.2 ``` ### **3.Power Factor** The power factor in cable R,S and T got from sensor. **Method:Publish** **Topic** ``` {Location ID}/{Device Name}/pf/{pf} ``` **Parameter** |Name|Example| |-|-| |pf(R-S-T)|0.6-0.8-0.7| **Example** ``` 123XYZ/AC/pf/20.6-0.8-0.7 ``` ### **4.isOn** The situation whether the device is on or not. 1 indicates on and 0 is off. **Method:Subscribe** **Topic** ``` {Location ID}/{Device Name}/isOn/{isOn} ``` **Parameter** |Name|Example| |-|-| |isOn|1| **Example** ``` 123XYZ/AC/isOn/1 ```