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JIHUAN Manuals & User Guides

JIHUAN products include automatic garden watering timers and USB-rechargeable handheld fans, helping users schedule outdoor irrigation and stay cool on the go.

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

About JIHUAN manuals on Manuals.plus

JIHUAN products documented here include automatic garden watering timers and USB-rechargeable folding handheld fans.

Browse manuals for setup, timer programming, charging, maintenance, and troubleshooting. Match the product name or model number before following instructions, as features vary by model.

For warranty or purchase-specific assistance, consult the documentation supplied with your product or contact the seller. Official brand support details have not been verified.

JIHUAN manuals

Selected manuals from manuals+ curated for this brand.

JIHUAN manuals from online retailers

Tuya WIFI Smart Water Timer User Manual

HCT-638 • May 6, 2026
Comprehensive user manual for the JIHUAN HCT-638 Tuya WIFI Smart Water Timer, covering setup, operation, maintenance, troubleshooting, and specifications for this programmable automatic irrigation controller.

JIHUAN support FAQ

Common questions about manuals, registration, and support for this brand.

  • How do I find the right JIHUAN manual?

    Match the product name or model number on your device or packaging with the available manual. This category includes watering timer and folding handheld fan instructions.

  • How do I set up the JIHUAN 1 Outlet Automatic Watering Timer?

    Insert two new AA 1.5V alkaline batteries and hand-tighten the timer onto an outdoor faucet. With the tap off, set the clock, start time, duration, and frequency. Then turn on the tap and select AUTO.

  • Does the 1 Outlet Automatic Watering Timer retain settings after power loss?

    The supplied instructions state that this timer does not retain its program after power is disconnected. Reset the clock and watering schedule after power loss.

  • How should I charge the JIHUAN folding handheld fan?

    The documented fan uses a Type-C input rated at 5V/2A. Fully charge it before first use, unplug it when charged, and do not use it while charging. Check your model's manual before selecting a power supply.

  • Where can I get JIHUAN warranty support or register my product?

    An official support contact, warranty page, and registration page have not been verified. Check the documents included with your product or contact the seller for purchase-specific guidance.