• Habotest HT91D+ smart digital voltage tester pen with LCD display and screwdriver tip.
  • HT91D+ tester showing data storage mode which saves the last 2 AC voltage measurement values.
  • Smart digital LCD screen displaying real-time AC voltage for live and null wire distinction.
  • Testing 9V battery polarity with HT91D+; screen displays -P and beeps for positive pole.
  • Close-up of detachable chrome vanadium magnetic screwdriver bit for HT91D+ voltage pen.
  • Functional diagram of HT91D+ showing LCD screen, NCV probe, flashlight, and control buttons.
  • Technical parameters table for HT91D+ including 12-300V range, NCV, and breakpoint detection.
  • Triple view of HT91D+ showing 170mm length and 30mm width dimensions for portability.
  • HT91D+ package contents including digital tester pen, 1.5V AAA battery, and user manual.
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HT91D+ Smart Digital Voltage Tester Pen with LCD Display & Screwdriver

HT91D+ Smart Digital Voltage Tester Pen with LCD Display & Screwdriver

HK$58.00
HK$58.00
Sale Sold out
Shipping calculated at checkout.

Short Product Description

Upgrade your interface with crisp visuals.
This 12864 Graphic LCD Module delivers a sharp 128x64 pixel resolution on a stunning blue backlight with white pixels. Built with the versatile ST7920 controller, it supports both Parallel and SPI Serial modes, allowing you to save precious I/O pins on your Arduino or microcontroller. Perfect for displaying complex graphics, charts, and custom text.

Key Features

  • High-Res Graphic Display: 128x64 dot matrix resolution enables text, images, and graph rendering.
  • Crisp Visibility: Deep blue background with bright white pixels provides excellent contrast and aesthetics.
  • Dual Interface Modes: Supports both 6800 8-bit Parallel and Serial (SPI) modes (Selectable via Pin 15 PSB).
  • Standard 5V Logic: Seamlessly compatible with Arduino UNO, Mega, and other 5V logic controllers.
  • Adjustable Contrast: Dedicated V0 pin allows for precise brightness and contrast tuning via potentiometer.
  • Robust Mounting: Four corner mounting holes (3mm) for secure installation in enclosures.

Full Product Description

Visualize Electricity with Precision

Gone are the days of vague neon lights that only tell you if power is "on." The Habotest HT91D+ brings professional electrical testing into the digital age. Designed for safety and efficiency, this intelligent tester pen displays the exact voltage reading (12V–300V AC) directly on its backlit LCD screen, giving you the data you need to work confidently.

 

More Than Just a Tester

This tool is a versatile companion for any toolbox. It functions as a robust magnetic screwdriver (Phillips/Flathead interchangeable) while simultaneously offering advanced diagnostic features. Whether you are installing a new light fixture, troubleshooting a faulty extension cord, or checking if a battery is dead, the HT91D+ handles it all.

 

Intelligent Safety Features

Safety is paramount at Sun Cheong Computer. The HT91D+ features Non-Contact Voltage (NCV) detection, allowing you to sense electricity without touching bare wires. It automatically distinguishes between Live (Hot) and Null (Neutral) wires with distinct visual and audio alarms. Plus, the built-in LED flashlight ensures you never have to work in the dark.

 

Why Choose HT91D+?

  • Real-Time Data: View AC voltage levels instantly.
  • Smart Memory: Automatically saves the last 2 voltage readings for easy reference.
  • Breakpoint Detection: Quickly locate where a wire is broken inside the insulation without cutting the cord.

Technical Specifications

  • Model: Habotest HT91D+
  • Voltage Range (AC): 12V – 300V (50/60Hz)
  • Display: Digital LCD with red/green backlight
  • Measurement Accuracy: ±(5% + 3 digits)
  • Functions: NCV (Non-Contact Voltage), Live/Null test, Continuity, Battery Positive test
  • Power Source: 1 × 1.5V AAA battery
  • Material: ABS plastic + chrome vanadium steel bit
  • Dimensions: 170mm × 30mm × 30mm
  • Weight: Approx. 59g
  • Auto Power Off: Yes (after inactivity)

Delivery Options

  • Local delivery within Hong Kong and in-store pickup.​
  • Free shipping for orders of HK$400 or above; HK$35 shipping fee for orders below HK$400.​
  • Shipped by SF Express, usually dispatched the same day for orders confirmed before 6:00 PM (Mon–Sat).​
  • Estimated delivery time: 1–3 business days after dispatch (Hong Kong).​
  • In-store pickup details (location and time) will be confirmed by email or phone message.​
  • Delivery times are estimates and may be affected by weather or unforeseen circumstances.​

FAQ Section

Q: Can this tester detect voltage without touching the wire?
A: Yes! It features an NCV (Non-Contact Voltage) mode. You can simply place the probe tip near the wire or socket to detect AC voltage safely through insulation.

Q: Does it work on standard Hong Kong 220V outlets?
A: Absolutely. The HT91D+ has a measurement range of 12V to 300V AC, making it perfectly suitable for Hong Kong's standard 220V power supply as well as lower voltage industrial control circuits.

Q: Is the screwdriver bit replaceable?
A: Yes, the unit comes with a dual-head removable bit (Phillips and Flathead). It is magnetic and hardened for durability, suitable for standard terminal screws.

Target Users / Applications

  • Home DIYers: Installing smart switches, changing light fixtures, or checking batteries.
  • PC Builders & Gamers: Checking power cables and wall socket grounding before plugging in expensive rigs.
  • Professional Electricians: Quick troubleshooting, wire sorting, and breakpoint detection.
  • Maintenance Staff: Facility management and routine safety checks.
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