User Manual and App Download: iOS App: Search for "Smart Life" or "Tuya App" in the App Store to download. Android App: Search for "Smart Life" or "Tuya App" on Google Play to download. Built-in WiFi Module: With remote control capabilities, connect the DT20 meter to a 2.4GHz Wi-Fi network. You can then monitor or adjust settings from your phone through the app anytime, anywhere. Product Parameters: Voltage Range: DC 0-420V (DC 5V independent power supply) Capacity Range: 0-99,999 AH Current Range: 0~30A / 0.1~100A / 0.2~200A / 0.3~300A / 0.4~400A / 0.5~500A / 0.6~600A (optional) Supports modification of circuits requiring additional relays for full charge and discharge protection, safeguarding the battery. Features alerts for low-voltage, over-voltage, over-power, or power outages (with an additional 5V relay circuit). Supports bidirectional current testing without the need to distinguish current direction. Shunt selection support: 100A / 200A / 300A / 400A / 500A / 600A (optional) Attention: This product supports bidirectional current testing. Discharging is indicated by a "-" symbol, while charging is displayed with a "+". The capacity test is cumulative. To reset the capacity to zero, hold down the "+" and "-" keys. Enter charging or discharging mode to test capacity; results will show either discharge or charge capacity.
