Factory direct TDM508-6 TDM508-7 the lowest quality 
 TDM509 TDM509-1 TDM509-1H 
 TDM509-2 TDM509-2H TDM508-2 
 TDM508-3 TDM508-4 TDM508-5 
 TDM508-6 TDM508-7 TDM508-8 
 TDM507-2 TDM507-3 TDM507-5 
 TDM507-6 TDM507-8 TDM501-2 
 TDM501-3 TDM501-4 TDM501-5 
 TDM501-7 TDM508-8MDD2 
 TDM508-7MPP2 TDM508-2MAD2 

 TDM509 three-phase multi-function distribution instrumentation: measurement of three-phase current, three-phase voltage, active power, reactive, apparent power, frequency, power factor, active power, reactive energy, RS485, LCD, Exterior: 96 * 96 
 TDM509-1 three-phase multi-function distribution meter: measure three-phase current, phase voltage, active, reactive, apparent power, frequency, power factor, active power, reactive energy, RS485, LCD, 4DI/4DO Appearance: 96 * 96 
 TDM509-1H three-phase multi-function distribution meter: to measure the three-phase current, phase voltage, active, reactive, apparent power, frequency, power factor, active power, reactive energy, RS485, LCD display, 2-31 harmonic wave, 4DI/4DO,, appearance: 96 * 96 
 TDM509-2 three-phase multi-function distribution instrumentation: measurement of three-phase current, three-phase voltage, active power, reactive power, apparent power, frequency, power factor, active power, reactive energy, RS485, LCD, 8DI/4DO Appearance: 96 * 96 
 TDM509-2H three-phase multi-function distribution meter: to measure the three-phase current, three-phase voltage, active, reactive, apparent power, frequency, power factor, active power, reactive energy, RS485, LCD display, 2-31 harmonic wave, 8DI/4DO,, appearance: 96 * 96 

 TDM508-2 three-phase multi-function distribution instrumentation: measurement of three-phase voltage, LED display, appearance: 96 * 96 
 TDM508-3 three-phase multi-function distribution instrumentation: measurement of three-phase current, LED display, appearance: 96 * 96 
 TDM508-4 three-phase multi-function distribution instrumentation: measurement of three-phase current, three-phase voltage, LED display, appearance: 96 * 96 
 TDM508-5 three-phase multi-function distribution instrumentation: measurement of three-phase current, three-phase voltage, active power, reactive power, apparent power, frequency, power factor, the LED display appearance: 96 * 96 
 TDM508-6 three-phase multi-function distribution instrumentation: measurement of three-phase current, three-phase voltage, active power, reactive power, frequency, power factor, the LED display appearance: 96 * 96 
 TDM508-7 three-phase multi-function distribution instrumentation: measurement of three-phase current, three-phase voltage, active power, reactive energy, multi-rate, frequency, power factor, the LED display, appearance: 96 * 96 
 TDM508-8 three-phase multi-function distribution meter: to measure the three-phase current, three-phase voltage, active, reactive, apparent power, active and reactive power degree, frequency, power factor, LED display, Overall: 96 * 96 

 TDM507-2 three-phase multi-function distribution meter: to measure the three-phase current, three-phase voltage, active, reactive, apparent power, active and reactive power degree, multi-rate, frequency, power factor, the LCD display, appearance : 96 * 96 
 TDM507-3 three-phase multi-function distribution instrumentation: measurement of three-phase current, three-phase voltage, active power, reactive power, apparent power, active and reactive power degree, multi-rate, frequency, power factor, the file note of searching, the LCD show appearance: 96 * 96 
 TDM507-5 three-phase multi-function distribution instrumentation: measurement of three-phase current, three-phase voltage, active power, reactive power, apparent power, active power, reactive power, frequency, power factor, multi-rate harmonic 2-31 wave, alarm function, LCD display, appearance: 96 * 96 
 TDM507-6 three-phase multi-function distribution instrumentation: measurement of three-phase current, three-phase voltage, active power, reactive power, apparent power, active power, reactive energy, frequency, power factor, multi-rate, alarm function, the file note of searching, LCD display, appearance: 96 * 96 
 TDM507-8 three-phase multi-function distribution meter: to measure the three-phase current, three-phase voltage, active, reactive, apparent power, active power, reactive power, frequency, power factor, ,2-31 multi-rate harmonic wave, alarm functions, files, remember to find, LCD display, appearance: 96 * 96 

 TDM501-2 single-phase multi-function distribution meter: measuring single-phase current, LED display, Overall: 96 * 48 
 (Optional 4-20mA, the switch output, pulse output) 
 TDM501-3 single-phase multi-function distribution instrumentation: measurement of single-phase voltage, LED display, appearance: 96 * 48 
 (Optional 4-20mA, the switch output, pulse output) 
 TDM501-4 single-phase multi-function distribution meter: measuring single-phase voltage, single-phase current, LED display, appearance: 96 * 48 
 (Optional 4-20mA, the switch output, pulse output) 
 TDM501-5 single-phase multi-function distribution meter: measuring single-phase voltage, single-phase current, active power, reactive power, apparent power, power factor, LED display, appearance: 96 * 48 (Optional :4-20mA, switch output energy pulse output) 
 TDM501-6 single-phase multi-function distribution instrumentation: measurement of single-phase voltage, single-phase current, active / reactive energy, LED display, Exterior: 96 * 48 (optional 4-20mA, switch output energy pulse output) 
 TDM501-7 multi-function distribution of single-phase meter: measuring single-phase voltage, single-phase current, active / reactive power degree, multi-rate, LED display, appearance: 96 * 48 (optional 4-20mA, switch output energy pulse output) 
 TDM501-8 multi-function distribution of single-phase meter: measuring single-phase voltage, single-phase current, active / reactive energy, active power, reactive power, apparent power, power factor, the LED display, appearance: 96 * 48 ( selected 4-20mA, switch output energy pulse output) 

 Full-featured, the MODBUS-RTU communication, 2-way D0,, DI TDM508-8MDD2, 2 road 
 Timeshare meter, with 2-way power pulse output, 2 DI TDM508-7MPP2 
 The three current with an analog output, 1 D0 output TDM508-2MAD2 
 Three-phase low-cost digital voltmeter configuration, no communication, no I / O TDM508-3 
 Has only one output, only the configuration 02