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JUANJUAN Manuals & User Guides

Manufacturer of digital measurement instruments, including water quality testers, weather stations, temperature controllers, and power meters.

Tip: include the full model number printed on your JUANJUAN label for the best match.

About JUANJUAN manuals on Manuals.plus

JUANJUAN is a manufacturer of precision electronic measurement tools and home monitoring devices, widely available through major online marketplaces. The brand specializes in environmental testing equipment, producing multi-function water quality monitors capable of measuring pH, TDS, EC, and salinity for aquariums, pools, and laboratories.

Their product lineup also includes digital temperature controllers (thermostats), weather stations with hygrometers, wall stud scanners, and coating thickness gauges. Designed for both hobbyist and professional use, JUANJUAN products focus on delivering affordable, functional digital instrumentation for home maintenance, agriculture, and industrial applications.

JUANJUAN manuals

Manuais máis recentes de manuals+ elaborado para esta marca.

JUANJUAN manuals from online retailers

User Manual: Smart Timer Sockets (TM12, TM15, WIFI02)

Smart Timer Socket • February 4, 2026
Comprehensive user manual for JUANJUAN Smart Timer Sockets, including setup, operation, and specifications for TM12 Countdown, TM15 Mechanical Digital, and WIFI02 Tuya WiFi models.

TempU 04 USB Temperature Data Logger Instruction Manual

TempU04 • January 30, 2026
Comprehensive instruction manual for the TempU 04 USB Temperature Data Logger, covering setup, operation, maintenance, troubleshooting, and detailed specifications for accurate temperature monitoring.

ETC-961 Digital Temperature Controller Instruction Manual

ETC-961 • January 28, 2026
Comprehensive instruction manual for the JUANJUAN ETC-961 Digital Temperature Controller, covering setup, operation, specifications, and troubleshooting for refrigeration and heating control applications.

TM02 Electronic Digital Timer Switch Instruction Manual

TM02 • 28 de xaneiro de 2026
Comprehensive instruction manual for the JUANJUAN TM02 Electronic Digital Timer Switch, covering setup, operation, features, specifications, and troubleshooting for various plug types (EU, US, FR, UK, AU).

WIFI Indoor CO2 Detector Air Quality Monitor User Manual

CO2 Detector • January 27, 2026
A comprehensive instruction manual for the JUANJUAN CO2 Detector, a 5-in-1 indoor air quality monitor. Learn about setup, operation, maintenance, and specifications for monitoring CO2, HCHO, TVOC, temperature,…

ETC-902 Digital Temperature Controller User Manual

ETC-902 • January 26, 2026
Comprehensive user manual for the JUANJUAN ETC-902 Digital Temperature Controller, covering setup, operation, specifications, maintenance, and troubleshooting for 12V, 24V, 110V, and 220V AC models.

JUANJUAN 3-in-1 Air Quality Monitor User Manual

Air Quality Tester • January 22, 2026
Comprehensive instruction manual for the JUANJUAN 3-in-1 Air Quality Monitor, covering CO2, CO, Temperature, and Humidity measurement, setup, operation, specifications, and maintenance.

JUANJUAN support FAQ

Preguntas frecuentes sobre manuais, rexistro e asistencia técnica para esta marca.

  • How do I calibrate my JUANJUAN pH meter?

    For models like the SALT-9953, calibration is typically done using standard buffer solutions (pH 6.86, 4.00, 9.18). Dip the electrode into the solution and long-press the calibration button (‘CAL’) for 5 seconds until the device enters automatic correction mode.

  • How do I connect my JUANJUAN device to the mobile app?

    Many smart JUANJUAN water monitors use the Tuya Smart app. Download the app, register, and then long-press the Wi-Fi/connection key on the device until the icon flashes to pair with your phone.

  • What battery does the HW-710 wall scanner use?

    The JUANJUAN HW-710 wall scanner and stud finder typically operates on a standard 9V battery, which is installed in the compartment on the back of the unit.

  • How do I reset the STC-8080A temperature controller?

    If an error code (such as E1) appears or parameters need resetting, press the SET key when the buzzer sounds to restore default manufacturer settings.