PM300 ENERGY METER - Elfa

GB 

OWNERS MANUAL 

Congratulations on your purchase 

of an energy meter. Please take the 

time to read and understand this 

manual so you can begin to enjoy 

the energy saving benefits this 

product has to offer. 

FEATURES 

• Overload warning 

• Energy monitor and energy 

consumption tracking 

• Maximum current and wattage 

readings 

• Energy cost calculation 

• Energy usage time 

PM300 

ENERGY METER 

P.1 

SUMMARY OF ELECTRICITY METER MODES 

P.04 

KWh 

MIDDLE PANE 

To call up MIDDLE displays of the following modes , press the DOWN key. The summary 

represents examples of the status of each individual mode and its function. 

DISPLAY SEQUENCE 

MIDDLE Pane 

Total Energy Mode ( KWh) 

Total Cost Mode ( TOTAL ) 

Price per Energy Mode ( PRICE/KWh ) 

KWh 

BOTTOM PANE 

This mode displays the total on time of the appliance plugged into unit, in Hour/Minute/Second or 

Hour/Minute format from the start of measurement. 

When the accumulated time reaches 99:59:59, the format will 

switch to Hour/Minute. Maximum is 9999:59 (10,000 hours). 

V 

Resolution is 1 second when the total time is less than 100 hours. 

Otherwise the resolution is 1 minute. 

The appliance must be turned on and drawing power for time to 

KWh 

be counted. 

If the appliance draws too little current (0.00A displayed in 

Ampere Mode), the time will not be counted. 

* 

V 

V 

* 

SUMMARY OF KEY FUNCTIONS 

1 

2 

3 

4 

5 

7 

1 LCD display 

2 UP: 

selects display mode of top pane 

(volt, amp, watt, max. amp, max. watt, overload setting). 

3 DOWN: 

selects display mode of middle pane 

(KWh, Total cost, price) 

4 OVERLOAD: 

allows setting of overload parameters. 

5 PRICE: 

allows setting of energy price setting. 

6 Battery compartment 

7 

Socket for appliance 

SUMMARY OF LCD DISPLAY 

Top pane 

Middle pane 

Bottom pane 

MAX 

KWh TOTAL 

PRICE/KWh 

W 

V 

A 

ENERGY MONITOR 

P.02 

* Press UP key to view the line voltage, line current, max. current, wattage and max. wattage and 

overload setting readings; displayed in the top portion of the LCD. 

1 Line Volt Display(V) 

Line voltage (in V) is displayed on the top pane. 

2 Line Current Display 

In this mode, present current ( A) 

drawn by the load is displayed. 

3 MAX. Current Display 

In this mode, the maximum current is displayed on top right pane. 

This reading will be held until another higher reading is captured 

and save as the new Max. current. 

4 Line Wattage Display 

In this mode, Power (Watt) display on top pane. The calculation of 

the power consumed by the load, in Watt, is resulted from 

multiplying the voltage, current and power factor 

(power = voltage x current x power factor) . 

The resolution of power consumed is 1 watt. 

5 MAX. Wattage Display 

In this mode, the maximum wattage is on 

top pane. This reading will be held until 

another higher reading is captured and 

save as the new Max. Wattage. 

# To Clear Max Load Record 

Press and hold UP and OVERLOAD for 

3 seconds, an 

audible tone is emitted, 

and it will clear max current and max 

wattage readings. 

6 

Front view Rear view 

Top Pane: 

The top pane is used to display the 

Voltage, Current, Max Current, Wattage, Max Watt, 

and the setting of Overload Watt/ Current. 

Middle Pane: The middle pane is used to display 

the energy used, total cost and the setting of 

energy price 

Bottom Pane: The bottom pane is used to display 

the total on time of the accumulated energy used 

by the appliance plugged into this unit, accumulated 

on-time, KWh, total price. 

* 

# 

P.05 

1 

2 

3 

4 

5 

6 

MAX 

MAX 

V 

A 

A 

W 

W 

W 

INSTALL BATTERIES 

Before operating, two 1.5 V type LR-44 or AG-13 or equivalent button cell batteries should be installed 

into the unit. This can be done by opening the battery compartment at the back of the unit, and then 

place the two batteries into the compartment while observing the correct polarity 

as shown on the battery compartment. The cover must be completely inserted 

before bring into operation. 

The purpose of the batteries is to store the metered amounts and programmes. 

Note: If you plan to leave the unit un-plugged for a long period of time 

(more than 1 month), the batteries should be removed in order to conserve 

battery consumption. Before replacing new batteries, unplug the unit from the 

outlet first before opening the battery compartment. 

SUMMARY OF ELECTRICITY METER MODES 

TOP PANE 

To call up TOP displays of the following modes , press the UP key. The summary represents 

examples of the status of each individual mode and its function. 

DISPLAY SEQUENCE 

TOP Pane 

Line Voltage Mode ( V) 

Current Mode ( A) 

Maximum Current Mode ( MAX. A) 

Wattage Mode ( W) 

Maximum Wattage Mode ( MAX. W) 

Overload Setting ( W) 

2 

W 

KWh 

P.03 

OVERLOAD INDICATION 

The overload warning function allows you to safeguard against exceeding a preset load capacity. 

The OVERLOAD symbol will flash and a beeping tone is heard to warn you in the case of an 

overload. 

Setting the Overload Parameter 

1 Select overload warning mode using UP key 

2 OVERLOAD symbol appears. Press OVERLOAD key. 

3 Press UP key or DOWN key to toggle between " W" and " A" 

. 

The symbol " W" 

flash means overload wattage is selected; 

Flash " A" 

means overload current is selected. 

4 Press OVERLOAD key again. 4-digits appears and the first digit " " flashes. 

5 Use UP key or DOWN key to set the desired value of the first digit. 

6 Press OVERLOAD key to select next digit, and so on. 

7 After complete all digits setting, press OVERLOAD key again to terminate the setting. 

* If no key is pressed for about 1 minute, the setting mode will terminate. 

* 

Note: 

- This energy meter is NOT a surge protector. 

P.06 

VV 

W 

3 

* 

4 KWh 2 4 

A 

3 

6 

7 

1 

5

ENERGY CONSUMPTION AND COST 

* Press DOWN key to view the total energy, total cost and price per energy; displayed in the 

middle portion of the LCD. 

A 

Total Energy Consumed (KWh) Display 

This mode displays the total accumulated energy used by the appliance (in KWh) from 

the start of measurement. The resolution is 0.001 KWh and the maximum is 9999.99KWh. 

B Total Time Consumed Display 

The total time that the meter is turned on and display in the Bottom portion of the 

LCD, in Hour/Minute/Second or Hour/Minute format 

from the start of measurement. 

When the time reaches 99:59:59, the format will switch to Hour/Minute. 

Maximum is 

9999.59. Resolution is 1 second for total time less than 100 hours. Otherwise the 

resolution is 1 minute. Both power meter and the appliance itself has to be turned on 

for time to be counted. If the appliance draws too little current (0.00A displayed in 

Ampere Mode), the time will not be counted. 

C Price / KWh mode 

This mode displays the total on time of the accumulated energy used by the 

appliance plugged into unit. When the cost is over 999.999, there will be no decimal 

place, so the total cost can be shown up to 

price set in Price/KWh mode. 

999999. The total cost is based on the 

In this mode the price per KWh is displayed and set. The rate set here will affect 

“ cost of the energy used". 

To set the price of energy, use the following steps: 

1 Press the PRICE key and the first digit will begin to flash. 

2 Press the UP or DOWN key to set the first digit “ “ of the price. 

2 4 

3 Press the PRICE key and the second digit will begin to flash. 

4 Press the UP or DOWN key to set the second digit of the price. 

5 Repeat step 3 and 4 to set the third, forth, fifth and sixth digit of the price. 

6 Press PRICE key to complete the price setting mode. 

* 

! 

7 The permitted range is from 0.001/KWh to 999.999/KWh. 

1 3 

! Press and hold the DOWN key and PRICE together for about 3 seconds, 6 

an audible tone emitted, and the KWH reading, total cost and the total ON time 

will be clear to zero. 

P.07 

REMARKS 

The power meter shall be used only in installation 

category II (CAT II) according of IEC 664, i.e. in which transient voltages do not 

exceed 2500V. The mains supply for residential and commercial areas generally 

belongs to this category. 

P.10 

KWh 

AS 

TOTAL 

B 

b 

PRICE/KWh 

C 

ABNORMAL DISPLAY 

If the display on the meter is abnormal or non-existent, reinstalling the batterries 

described above, otherwise the meter may not function faultlessly. 

CONNECTING APPLIANCES 

1 

2 

* 

P.08 

SAFETY & MAINTENANCE INSTRUCTIONS 

• Use indoors only. 

• Keep children and pets away. 

• Keep away from water. 

• Inspect periodically. 

• The unauthorised rebuilding and/ or modifying of the device is not permitted. 

• 

• 

• 

Plug the energy meter into an electrical socket. 

Plug the power plug of an appliance such as refrigerator 

into the socket on the front of the energy meter. 

The energy meter displays the main voltage “V”, 

electricity consumption and how long it was switched on. 

If you are not sure about the operation, safety or the connection of the device, 

contact an expert. 

Repair work must only be carried out by a trained person who is familiar with the 

relevant regulations. 

The guarantees become invalid in the event of damage resulting from non-observance 

or improper use of the operation manual. 

• To avoid any hazard or misuse, please use this product only as described in user manual. 

1 

2 

KWh 

V 

TECHNICAL SPECIFICATION 

Operating voltage 

Operating current 

Lowest measurable current 

Voltage display range (V) 

Current display range (A) 

Wattage display range (W) 

KWh display range (in KWh) 

Power resolution 

: 230 V ~ 50 Hz 

: max. 16 A, 3680 W 

: 0.02 A 

: 190 V - 276 V 

: 0.00 A - 16.00 A 

: 0 W - 4416 W 

: 0.00 - 9999.99 KWh 

: 1 W 

Accuracy 

Voltage: +/-3 % of measured value 

Current: +/-3 % of measured value +/- 0.04 A 

Wattage: +/-5 % of measured value +/- 10 W 

kWh: +/-5 % of measured value +/- 0.1 kWh 

Accuracy figure based on 

- Line frequency of 45 ~ 65 Hz 

- Unit at normal room temperature 

- Harmonic distortion of voltage/ current < 15% 

Note: Accuracy of the power meter may be reduced when there is significant electrical noise 

present in the AC line. However, the accuracy will return to normal after the noise is removed. 

Range of environment conditions 

- Temperature 5 °C to 40 ° C 

- Maximum relative humidity: 90 % 

- For indoor use only 

- Altitude: up to 2000m 

P.09 

CLEANSING INSTRUCTIONS 

• Please unplug the device before you clean it. 

• 

• 

• 

Use dry soft cloth to clean the device surface. 

Never spill liquids on the device when cleansing. 

Never open the covers when cleansing. 

P.11 P.12

PM300 ENERGY METER - Elfa

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