Cheap Onzo Energy meter - £8
Discussion
Warmfuzzies said:
What do you good people have set as the eac and country at please, couldn’t see for looking...
EAC is Estimated Annual Consumpton. So try 10kW/H (or so per day) x 365 = 3650. It seems the EAC auto updates within the first couple of weeks, or your current bill should show it somewhere.
The Onzo will eventually show whether you're above or below the target consumption with the last two icons in the top row.
Country Code is 01 for the UK, 00 for Eire.
Slushbox said:
Horror of horrors: 'YOU ARE NO LONGER ON TRACK TO MEET YOUR PERSONAL HOUSEHOLD TARGET'
has appeared.
The contraption has jacked up my entered daily target of 10 kW/h to 10.3 kW/h. What new madness is this?
I think it is monitoring your usage and at first after a period of time 13/14 days updates your target, then it is weekly.has appeared.
The contraption has jacked up my entered daily target of 10 kW/h to 10.3 kW/h. What new madness is this?
Mine is still dead, probably for the best as the wife is using the tumble dryer a lot due to the weather.
Mine arrived with corrosion on the battery terminal in the sender unit.
It cleaned up fairly easily but despite the battery not looking damaged it would not work. 3 AAA batteries in there and it worked immediately, so the problem was not the unit.
I then put the rechargeable battery back in and left the unit clamped around the house power cable. After about an hour it started working.
I presume the battery needed a bit of a recharge.
It cleaned up fairly easily but despite the battery not looking damaged it would not work. 3 AAA batteries in there and it worked immediately, so the problem was not the unit.
I then put the rechargeable battery back in and left the unit clamped around the house power cable. After about an hour it started working.
I presume the battery needed a bit of a recharge.
Slushbox said:
Warmfuzzies said:
What do you good people have set as the eac and country at please, couldn’t see for looking...
EAC is Estimated Annual Consumpton. So try 10kW/H (or so per day) x 365 = 3650. It seems the EAC auto updates within the first couple of weeks, or your current bill should show it somewhere.
The Onzo will eventually show whether you're above or below the target consumption with the last two icons in the top row.
Country Code is 01 for the UK, 00 for Eire.
Mine arrived £6.39 looks brand new in box 
The rechargable battery 3rd contact was all corroded up, but sorted with some WD40 and a small file
Battery volts = zero
It's camped around the cable - you reckon hour or so for the battery to come to life?
Is there an LED or summat on the sensor unit to show it's alive?
The rechargable battery 3rd contact was all corroded up, but sorted with some WD40 and a small file
Battery volts = zero
It's camped around the cable - you reckon hour or so for the battery to come to life?
Is there an LED or summat on the sensor unit to show it's alive?
saaby93 said:
...Battery volts = zero
It's camped around the cable - you reckon hour or so for the battery to come to life?
Is there an LED or summat on the sensor unit to show it's alive?
That is what mine did. I clamped it back on the cable with the discharged original battery pack installed and then came back to check after an hour or so. It did not seem to work (as in no lights on the sender and no readings on the receiver) but when I went to remove the clamp the orange light flashed and then the receiver began to display the readings. I may just have been lucky.It's camped around the cable - you reckon hour or so for the battery to come to life?
Is there an LED or summat on the sensor unit to show it's alive?
Just checked the battery. Both of those red wires go to positive. The exposed crudded end is negative
It was zero earlier and it's now just over a volt. Looks like I didnt leave it long enough
Just putting the battery pack back and see if it comes alive in another hour
It was zero earlier and it's now just over a volt. Looks like I didnt leave it long enough
Just putting the battery pack back and see if it comes alive in another hour
Edited by saaby93 on Thursday 8th November 12:41
My 2 for £11 arrived today.The batteries have already been removed. No mamual in the box either but got it set up.
Seems to work. With tv on its about 110-120w.
Off with a few bits on standby plus fridge and freezer its reading 0 dont think yhe fridge amd freezer have kicked in and im guessing below a certain current draw it just wont register.
Seems to work. With tv on its about 110-120w.
Off with a few bits on standby plus fridge and freezer its reading 0 dont think yhe fridge amd freezer have kicked in and im guessing below a certain current draw it just wont register.
[quote=ajprice]Just ordered one, and I also have an India spec electricity meter 
, so I'd clamp the sensor to the red cable on the left?[
The red cable on the left is (probably) the incoming live. The one on the far left is (probably) supply to the consumer unit. Either will work, but the one on the far right will be a watt/H or so more accurate.
Usually it's 'The Fourth Cable from the Left. ' (Onzo.)
There's a second button on the sensor, (not the blue one) Seems to be a battery check. A yellow light on the sensor illuminates when it's pressed. (On mine)
, so I'd clamp the sensor to the red cable on the left?[The red cable on the left is (probably) the incoming live. The one on the far left is (probably) supply to the consumer unit. Either will work, but the one on the far right will be a watt/H or so more accurate.
Usually it's 'The Fourth Cable from the Left. ' (Onzo.)
There's a second button on the sensor, (not the blue one) Seems to be a battery check. A yellow light on the sensor illuminates when it's pressed. (On mine)
bazza white said:
My 2 for £11 arrived today.The batteries have already been removed. No mamual in the box either but got it set up.
Seems to work. With tv on its about 110-120w.
Off with a few bits on standby plus fridge and freezer its reading 0 dont think yhe fridge amd freezer have kicked in and im guessing below a certain current draw it just wont register.
Mine showed 19 watts today first thing in the morning, when the freezer 'engine' was off. Only the router and the boiler energised. Seems to work. With tv on its about 110-120w.
Off with a few bits on standby plus fridge and freezer its reading 0 dont think yhe fridge amd freezer have kicked in and im guessing below a certain current draw it just wont register.
Having an Onzo is like those Tamagotchi things, needs constant attention.
Mine arrived yesterday, nicely packaged. Checked & installed today, both battery packs had some corrosion. Easily cleaned though. Charged the display on a USB supply & it was showing full. The meter end I installed & it worked straight off.
Grill is on & it jumps from 1000watts to nearly 4000! Just need to set up the costs. Great deal.
Grill is on & it jumps from 1000watts to nearly 4000! Just need to set up the costs. Great deal.
saaby93 said:
Just checked the battery. Both of those red wires go to positive. The exposed crudded end is negative
It was zero earlier and it's now just over a volt. Looks like I didnt leave it long enough
Just putting the battery pack back and see if it comes alive in another hour
Now 1.8V - not enough to operate. It's stealing energy from somewhere to charge the batteryIt was zero earlier and it's now just over a volt. Looks like I didnt leave it long enough
Just putting the battery pack back and see if it comes alive in another hour
ETA now 3.6V
It wasnt pairing - it looks like you have to press the blue buttons when the units are right next to each other
'please sync me' to a PC? came up but now gone
Added the time and date manually but left the default unit price and target usage
Some kit on standby switched off - it's already saving leccy
Edited by saaby93 on Thursday 8th November 23:26
untakenname said:
My batch of 5 arrived today, all had leaking batteries, I used some contact cleaner and wire wool to remove the fur but one unit seems to be DOA.
I've placed the sensor onto the first cable (red far left) not the forth like in the instructions, will this affect the accuracy?
Looking at that again dont the red and black wires on the left come out of the master incoming fuse below?I've placed the sensor onto the first cable (red far left) not the forth like in the instructions, will this affect the accuracy?
The power comes out of the meter and goes two ways.
Unless you want to measure both, it's the left red inlet wire you'll have to clamp
bazza white said:
On the weekly cycle does it reset on a monday or 7 days from first use?
I think it's seven days from first use. Also, to reinforce the notion that the info is stored in the sensor I replaced the batteries in my sensor with NiCads, and the meter lost all historical data. (But not the time or EAC settings etc. )
This morning found the head had lost connection with the sensor 
Pressed the power button on the sensor and no flashing LED
Last night with switching most things off the power was down to 20W
Since the power through the red wire generates the magnetic field to charge the sensor battery it looks like 20W is not enough to keep the sensor alive.
Has anyone seen a figure for minimum usage for the system to work?
Pressed the power button on the sensor and no flashing LED
Last night with switching most things off the power was down to 20W
Since the power through the red wire generates the magnetic field to charge the sensor battery it looks like 20W is not enough to keep the sensor alive.
Has anyone seen a figure for minimum usage for the system to work?
saaby93 said:
This morning found the head had lost connection with the sensor
Pressed the power button on the sensor and no flashing LED
Last night with switching most things off the power was down to 20W
Since the power through the red wire generates the magnetic field to charge the sensor battery it looks like 20W is not enough to keep the sensor alive.
Has anyone seen a figure for minimum usage for the system to work?
Same. I came back yesterday and it had lost sync. I have non rechargeables in, surely they haven't died in a week?Pressed the power button on the sensor and no flashing LED
Last night with switching most things off the power was down to 20W
Since the power through the red wire generates the magnetic field to charge the sensor battery it looks like 20W is not enough to keep the sensor alive.
Has anyone seen a figure for minimum usage for the system to work?
(I've not checked yet, to be fair!)
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