Audited Supplier 
The capacity tested for this product is the total capacity, which is the accumulated data! Whether in charging or discharging mode, if the data is not reset zero, the capacity is accumulated! The battery percentage is calculated based on the fully charged voltage (100% battery voltage) and the cut-off voltage (0% battery voltage).
So before each charge or discharge, it is necessary to reset zero the data and test the battery's single capacity!
!!!!!
It is not battery charging: capacity add(+), discharging: capacity reduce(-), battery percentage is not calculated based on total capacity (AH) and remaining charge (AH)
Before making a purchase, please read this paragraph carefully to avoid any misunderstandings. Thank you!
DT20 firmware upgrade instructions
This product has recently been upgraded with the latest firmware (V1.0.7 version),
Please receive a prompt to upgrade the firmware recently. If you have not received the message, please be patient and wait for the firmware upgrade!
Product firmware upgrade instructions:
1. The startup information has changed. If you need to turn off information monitoring, please long press the "M" key to enter the background and turn off the information prompt!
2. Battery percentage (100% full voltage and 0% low battery voltage) and OVP (overvoltage alarm), LVP (low voltage alarm) need to be set separately, which can be set to the same value or different values
3. This product is a bidirectional current, with a+symbol for charging and a - symbol for discharging, changed to the direction of the arrow (charging position ← symbol, discharging → symbol)
4. When encountering WiFi connection failure, long press the"M" key to enter the background and select the WiFi reset option
5. The system sound can be turned off or on, long press the "M" key to enter the background settings
6. Language selection, long press the "M" key to enter the background settings
APP upgrade instructions:
1. Increase battery percentage display (numerical and graphical display)
2. Charging as current, power will not change, discharging: The symbol - will be displayed in front of the current power value, for example, charging 12.0V 1.00A 12.00W, discharging: 12.0V -1.00A -12.00W is displayed
3. Graph curve: Real time data can be opened, and the data will change in real time
All data is uploaded to the cloud once an hour and displayed, calculated on average every hour
4. Add a switch for the relay (the device side requires long pressing the "+" key or "-" key to turn on and off). This function will only take effect if the relay package is purchased
| Condition | new |
| Wrranty | 180 days |
1, User manual, PC software installation instruction and PC software and Android APP download link :http://en.NewsDetail.aspx?ID=75
2, IOS APP: search smart life or tuya APP on i-phone APP store to download
3, Android APP: search smart life or tuya APP at Google play to down load
Built in WiFi module
Remote Control:Connect the DT20 meter Wi-Fi to 2.4GHz Wi-Fi, then you can monitor or adjust on your phone through the app at any time anywhere.
Product parameters
Voltage range:DC 0-420V (Need DC5V independent power supply)
Capacity range: 0-99999AH
Current range:0~30A/0.1~100A/0.2~200A/0.3~300A/0.4~400A/0.5~500A/0.6~600A(optional)
Support the modification of circuits that require additional relays to be fully charged and fully discharged, which can protect the battery;
low-voltage, over-voltage, over-Power prompt or power outage (when adding 5V relay circuit); Support bidirectional current testing access,After the line, there is no distinction between the direction of current!
shunt selection: 100A/200A/300A/400A/500A/600A
screw and nut specifications: M8
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