Email: admin@pretech-e.com
Phone: (86) 13129558030
7-inch Battery-Free Android HMI Tablet with MTK8786 for Smart Appliance and Smart Control Integration
7-inch Battery-Free Android HMI Tablet with MTK8786 for Smart Appliance and Smart Control Integration
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7-inch Battery-Free Android HMI Tablet with MTK8786 for Smart Appliance and Smart Control Integration

Model: 7-inch tablets PC open frame HMI
Pretech's differentiation lies in its 10+ years of ODM specializationin customized HMI for demanding vertical markets.
MTK Platform Mastery:Deep expertise in the MTK8786 platform ensures rapid, stable development and high performance optimized for continuous embedded display loads.
Extreme Environment Engineering: Specialized ODM capabilities include designing for Oil/Water resistance and guaranteeing V0 anti-fire compliance, which is non-standard for consumer tablets.
Mission-Critical Stability: The provision of the Anti-system Crushing Solutionis a significant competitive edge, addressing the single most critical failure point for battery-free Android embedded systems.
Comprehensive ODM Lifecycle Support:From initial hardware design (casing, I/O) to full software control (Custom Launcher, MDM, OTA), Pretech provides a single source for a stable, market-ready HMI.
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7-inch Battery-Free Android HMI Tablet with MTK8786 for Smart Appliance and Smart Control Integration

Custom 7-inch Embedded HMI Solution: Robust, Always-On Control for IoT

Pretech is your dedicated ODM partner, leveraging deep hardware engineering to build perfect embedded solutions. Our expertise focuses on meeting the stringent requirements of smart appliances: from designingoil-resistance screens and anti-water vapor casing to implementing a unique Anti-system Crushing Solution required for No-Battery Models. We provide end-to-end service, including custom Android OS development,MDM Management, and OTA upgrade solutions.
Custom 7-inch Embedded HMI Solution: Robust, Always-On Control for IoT

Pretech: Unrivaled ODM Customization and R&D Power

Essential Features: Battery-Free Safety & Embedded Reliability & Engineered for Harsh Environments (Kitchen-Ready)
Pretech 7-inch tablet features a crisp HD IPS display and is powered by the high-performance MTK8786 Octa-core chip. Pretech custom tablet is purpose-built to survive the typical rigors of a smart kitchen environment, a focus ofPretech's ODM expertise:
  • Battery-Free Design
    Battery-Free Design
    Operates directly via Type-C power input. The absence of a battery ensures maximum safety, eliminates thermal degradation risks, and meets high-temperature resistance standards crucial for kitchen appliances.
  • High-Speed Connectivity
    High-Speed Connectivity
    Features AC Wi-Fi (802.11 ac/b/g/n/a) and BT 5.0 for reliable wireless communication and IoT integration.
  • Oil-Resistance Screen
    Oil-Resistance Screen
    Specialized coating for easy cleaning and maintenance in greasy environments.
  • Anti-Water Vapor Design
    Anti-Water Vapor Design
    Casing engineered to resist moisture ingress, ensuring electronics longevity when placed near boiling water or steam.
  • V0 Anti-Fire Protection
    V0 Anti-Fire Protection
    UtilizingV0 level anti-fire protection standardfor the housing material and charger, maximizing safety compliance.
  • MDM/ OTA
    MDM/ OTA
    Software Customization:Includes pre-installation of custom apps, a customized launcher, and robust MDM (Mobile Device Management) and OTA Upgrade Solutionsfor lifecycle support.
Expanded Applications: Embedded Terminals Across IoT , Key Value Proposition: Safety, Stability, and Deep Customization
Pretech 7-inch battery-free HMI terminal, utilizing Pretech's ODM expertise, is ideal for any application requiring a durable, always-on, fixed-installation touch panel.
Smart Coffee Brewer HMI: Coffee Brewer / Espresso Machine
Smart Coffee Brewer HMI: Coffee Brewer / Espresso Machine
Pretech 7-inch Battery-Free HMI tablets acts as the central control panel for selecting bean type, grind size, brewing temperature, and volume. It displays real-time brewing progress and connects via AC Wi-Fi for scheduled remote starts and firmware updates (OTA support).
  • Smart Cooker HMI: Multi-Cooker / Rice Cooker / Induction Cooktop
    Smart Cooker HMI: Multi-Cooker / Rice Cooker / Induction Cooktop
    Pretech MTK8786 HMI tablets Terminal is integrated for complex cooking programs, recipe viewing, and precise temperature/time control. Pretech's Anti-system Crushing Solution ensures the cooking program is never corrupted by unexpected power fluctuations during the cooking cycle.
  • Water Dispenser HMI: Smart Water Purifier / Hot/Cold Dispenser
    Water Dispenser HMI: Smart Water Purifier / Hot/Cold Dispenser
    Pretech fixed-installation 7-inch HMI tablets controls filtration status, water temperature presets, and dispensing volume. Its Battery-Free design is ideal for devices requiring 24/7 continuous operation and eliminates the safety risk of internal batteries near heating elements.
  • 7-inch tablets battery-free HMI terminal for Smart Range Hood
    7-inch tablets battery-free HMI terminal for Smart Range Hood
    Embedded in the hood panel, the 7-inch HMI tablets controls fan speed, lighting, and cleaning cycles. It utilizes the MTK8786 Octa-core to display multimedia and air quality data. Oil & Moisture Resistance: The Oil-Resistance Screen facilitates easy cleaning, while the Anti-Water Vapor Design protects the internal electronics from steam, guaranteeing the Battery-Free Tablet's longevity.
  • 7-inch battery-free tablets open frame tablets for Smart Refrigerator (Embedded)
    7-inch battery-free tablets open frame tablets for Smart Refrigerator (Embedded)
    Integrated into the refrigerator door, Pretech Battery-Free HMI tablets manages inventory, provides expiration reminders, facilitates online grocery shopping, and acts as a multimedia display. Always-On Reliability: The Battery-Free HMI is perfect for continuous, 24/7 fixed power applications like refrigerators. The high-performance MTK8786 ensures smooth handling of demanding applications and video display.
  • 7-inch battery-free HMI tablets for Smart Dishwasher / Sterilizer
    7-inch battery-free HMI tablets for Smart Dishwasher / Sterilizer
    The 7-inch HMI tablets is used to select washing/sterilizing modes, display operational status, and provide reminders for consumables. It supports remote start and diagnostics. Environmental Durability: Pretech's ODM expertise provides the necessary Anti-Water Vapor and Anti-Corrosion housing design to withstand the high-humidity, high-temperature environment of these appliances.
  • 7-inch battery-removed HMI terminal for Multi-Functional Food Processor
    7-inch battery-removed HMI terminal for Multi-Functional Food Processor
    The 7-inch HMI Tablet offers an advanced programming interface for controlling complex parameters (speed, temperature, time) and displays real-time recipe video tutorials. User Experience: The G+G Touch display ensures accurate and responsive control, even when hands are slightly moist or oily. The unified Type-C power input simplifies integration into the processor's base unit.
  • 7-inch battery-removed Tablets for Smart Oven / Combi-Steamer ODM Solutions
    7-inch battery-removed Tablets for Smart Oven / Combi-Steamer ODM Solutions
    Tablet without battery serves as the master control panel, displaying detailed cooking programs, recipe guides (video/graphic), internal temperature, and timer controls. It connects to cloud recipe libraries and supports OTA updates.High Heat & V0 Fire Protection: The Battery-Free design and V0-level fireproof materials ensure absolute safety and reliable operation in the oven's high-temperature environment. Anti-System Crushing: The proprietary solution prevents OS and data corruption that can be caused by unexpected power loss due to high thermal load.
  • 7-inch battery-removed Android Tablets for Industrial Control Panels (HMI)
    7-inch battery-removed Android Tablets for Industrial Control Panels (HMI)
    Pretech 7-inch battery-removed HMI terminal used as a fixed-mount control screen in light industrial machinery. The Anti-system Crushing Solution ensures data integrity even with unstable external power sources in factory settings.
  • Battery-removed Android Tablets for Building Access & Security
    Battery-removed Android Tablets for Building Access & Security
    Pretech 7-inch battery-free HMI tablets Embedded into smart door systems or intercoms. The reliable battery-free operation and slim form factor make it an excellent choice for secure, always-on access control systems in residential or commercial buildings.
  • Battery-removed Android Tablets for Healthcare Bedside Terminals
    Battery-removed Android Tablets for Healthcare Bedside Terminals
    Pretech 7-inch tablets battery-removed HMI touch screen fixed to hospital beds for patient entertainment and nurse call/monitoring systems. The durable plastic housing and stable, battery-free operation ensure continuous, safe use in sensitive medical environments.
  • Battery-removed Android Tablets for Smart Home Control Hubs
    Battery-removed Android Tablets for Smart Home Control Hubs
    Pretech 7-inch battery-free HMI tablets integrated into walls as a central hub for controlling lighting, security, and climate. The Pretech custom launcher and reliable AC Wi-Fi provide a dedicated interface for smart home automation.

What We Do

We offer ODM solutions for certain customers who have specific needs which can’t be satisfied by existing devices on the market.
  • Tooling
    ID Design
    MD Design
  • Software
    Drive Debugging
    System Customization
    Debug Pre-installed applications
  • Hardware
    Schematic Diagrams Design
    PCB Layout
    Specific components design
    Bill of Materials output
    Gerber Files
    RF Design and Verification
    Assembly Drawings
    Test Specifications output
  • Accessories
    Smart Cover
    Docking Charging Station
    Charging Bracket/Dock
    Magnetic BackClip
    Wall Mount
    Stylus Pen
    And more

How We Do

We offer ODM solutions for certain customers who have specific needs which can’t be satisfied by existing devices on the market.
  • 01 Planning
    Market Survey
    Requirements Collection
    Competitiveness Analysis
    Technology Study
    Risk Analysis
    Component Life Cycle Survey
    Cost Evaluation
  • 02 Desgin
    ID Design
    MD Design
    Hardware
    OS
  • 03 Validation
    Trial Samples
    Software Customization
    Performance Tests
    Reliability Tests
    EVT
    DVT
    Certifications
  • 04 Integration
    Assembly Study and SOP
    Pilot Run Production
    Testing Process Study and SOP
    Field Test/Feedbacks
    Improvements
  • 05 Production
    Pilot Run Production
    Mass Production
  • 06 After Service
    Global Warranty
    Extended Warranty Service
    Online Service

Specification

  • Processor
    MTK8786 (G80) Octa-core
  • Operating System
    Android 15/16 Ready
  • Display
    7" HD IPS, 800 x 1280 Resolution, G+G Touch
  • Memory/Storage
    RAM: 8GB
    Storage: 64GB
  • Camera
    NO (Camera removed for cost/security optimization)
  • Connectivity
    AC Wi-Fi (802.11 ac/b/g/n/a), BT 5.0 (A2DP, LE)
  • Power Input
    Type-C (External Power Input)
  • Sensors
    G sensor (Default)
  • Audio
    Speaker: YES, Microphone: NO
  • Housing Material
    Plastic (Customizable for V0 Fire Protection)
  • Customization
    Preinstall Custom App, Custom Launcher, MDM, OTA Support
  • Battery
    NO, with Anti-system Crushing Solution

FAQs

  • Hardware
  • Core Functionality
  • Customization & Integration
  • Deployment
  • Software & Performance
Hardware
  • What defines this 7-inch tablets PC open frame HMI for embedded use?
    This is a component-level Android display designed for direct integration, featuring a 7-Inch Panel and a powerful industrial-grade CPU (Rockchip based). The Open Frame Design allows for easy customization of the surrounding enclosure by the equipment manufacturer.
Core Functionality
  • What connectivity does this 7-inch Embedded Solution offer for machine control?
    It is optimized for wired control, offering essential ports (often including GPIO, RS232/485, and Ethernet) for communicating directly with PLCs, Sensors, and other industrial machinery. This ensures stable and reliable Machine Interface control.
Customization & Integration
  • How does Pretech facilitate deep integration into my industrial machinery?
    Pretech specializes in Full ODM Customization. We can adjust the PCB/Board Layout, modify the display's Brightness/Backlight, and tailor the Mounting Holes/Dimensions of the Open Frame to meet the precise mechanical and electrical requirements of your finished product.
Deployment
  • Is this 7-inch HMI suitable for harsh industrial environments across global regions?
    Yes. The robust design and industrial-grade components are built for longevity. We offer customization for Wide Temperature Operation and specific Front Panel Coatings to ensure reliability in demanding factory environments in Asia, Europe, and the US.
Software & Performance
  • Can the Android OS be locked down to run only our specific HMI application?
    Absolutely. Our ODM services include custom Android Firmware builds that support Kiosk Mode and System Lockdown. This ensures the Embedded Tablet functions solely as a dedicated Human-Machine Interface (HMI), with enhanced security and stability.

Inquriy

More contact information
Email:
admin@pretech-e.com
Address:
808, 8F, Qiancheng Commercial Center, 5 Haicheng Road, Baoán, Shenzhen
TEl:
+86-755-23051989
(86) 13129558030
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