Product Overview
The GE21 Series is a low-profile vehicle-mounted hollow encoder switch introduced by Taclex Switch. It features a hollow-shaft design that enables a compact, space-saving structure, and is available with various shaft length options. This series is specifically designed for automotive systems and consumer electronics applications.
Technical Parameters
| Specification |
| Pulses/Positioning | 15/30 |
| Output Signal | Bidirectional (A/B) incremental |
| Full Rotation Angle | 360 degrees |
| Rotational Torque | 7.0+3.0 mN·m (70+30 gf·N) |
| Axial Thrust Capacity | 40 N (4.08 kgf) Max. |
| Axial Play | 0.3 mm Max |
| Output Voltage | 1 V Max |
| Maximum Operating Current | 2.5 mA |
| Shaft Wobble | 0.5*L/30 mm p-p Max (L refers to the distance from the mounting surface to the end of the shaft) |
Key Features
1. Hollow Shaft Architecture: A Revolutionary Improvement in Space Utilization:
Traditional solid-shaft encoders occupy valuable axial space, whereas the GE21’s hollow shaft design frees up the central area to serve as a functional channel. Wiring harnesses can pass through it, LED indicators can channel light through it, and components such as potentiometers and buttons can even be coaxially nested within it, achieving the ultimate in integration with “one hole, multiple uses.”
2. Wide Temperature Range from -40°C to 85°C: Withstands All-Season Extremes:
From the frigid -40°C winters of the far north to the scorching heat inside a car cabin during the height of summer, the GE28 consistently maintains precise encoding output and stable mechanical feel. Specifically designed for the extreme temperature fluctuations of automotive environments, it has passed rigorous thermal shock testing.
3. Low-Profile Design, Seamlessly Integrated into Modern Aesthetics:
The ultra-thin, low-profile structure allows the encoder to virtually “disappear” beneath the device panel, with only the elegant knob cap visible. This aligns with the minimalist aesthetics sought in contemporary automotive interiors and smart home applications, while also meeting the demands of increasingly compact PCB stacking.
4. Multiple stem lengths available—one product fits thousands of panels:
With a variety of stem lengths available, whether for ultra-thin 1mm glass panels, 3mm plastic housings, or thickened metal panels over 5mm, precise compatibility can be achieved simply by selecting the right model—no custom tooling required—significantly shortening the R&D cycle.
5. 50,000-Cycle Lifespan: Reliable Performance Throughout the Device’s Lifecycle:
Under full-load rotation and pressing conditions, the mechanical lifespan exceeds 50,000 cycles. For in-car audio systems or home appliance controls operated dozens of times daily, this is more than sufficient to cover the entire device lifecycle, thereby reducing after-sales maintenance costs.
Applications
In-Vehicle Electronic Systems：
Car stereo head unit: Rotary encoder knobs for volume control, track selection, and sound mode selection
Air conditioning control panel: Fine-tuning of temperature settings, fan speed levels, and airflow modes
Dashboard interaction: Push-to-confirm knobs for navigating the trip computer menu and switching between mileage and fuel consumption information
Center console screen controller: Physical knobs for hands-free operation while driving, enhancing driving safety
Seat/Rearview Mirror Adjustment: Encoder input for selecting memory positions
Multimedia and Consumer Electronics：
Volume/playback control knobs for portable Bluetooth speakers
Parameter fine-tuning encoders for professional voice recorders and mixing consoles
Gimbal angle and flight mode selection on drone remote controls
Rotary wheels or macro function encoders on game controllers
Smart Appliances：
Cooking time/heat setting knobs for microwaves and ovens
Program selection and start confirmation for washing machines and dishwashers
Airflow/humidity adjustment for air purifiers and humidifiers
Grind fineness/speed settings for coffee makers and blenders
Smart Home：
Temperature settings and mode switching on smart thermostats
Stepless brightness and color temperature adjustment on smart lighting panels
Code confirmation for interior deadbolt and child lock functions on smart door locks
Menu navigation knobs on video intercom systems
Industrial and Instrumentation：
Range and function selection on portable oscilloscopes and multimeters
Parameter setting and confirmation on industrial handheld terminals
Alarm threshold adjustment on medical monitoring equipment
