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SF-102 Forklift Speed Limiter

WTSAFE SF-102 is a forklift overspeed alarm and speed limiter designed to monitor vehicle speed and reinforce safer driving practices. It combines wireless speed detection, three-level audible and visual warnings, configurable speed thresholds and optional throttle control for electric and fuel-powered forklifts.

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Three-level overspeed warning
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Wireless real-time speed detection
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Configurable speed limits and lock mode
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Optional electronic or mechanical throttle control

Key Features

Configurable speed monitoring, three-level warnings and optional throttle control help facilities manage forklift overspeed risks.

01

Three-Level Speed Warning

Set three speed thresholds to trigger different visual, audible and voice warnings as vehicle speed increases.

02

Active Speed Limiting

With a compatible electronic or mechanical throttle controller, the system can restrict speed at the configured Level 3 threshold.

03

Overspeed Lock Mode

A configurable 0-99 second delay can be used before locking the throttle at idle after continuous overspeed; administrator remote control is required to unlock it.

04

Wireless Speed Detection

A factory-paired wireless wheel sensor measures vehicle movement without requiring a wired connection to the host.

05

Adjustable Alerts & Reverse Reminder

Eight alarm-volume levels support different work environments, while the reversing voice reminder can be enabled or disabled.

06

Protected Administrator Settings

Alarm thresholds, wheel diameter, volume and control modes are configured with an infrared remote rather than exposed host buttons.

How It Works

The wireless sensor measures wheel movement and sends speed information to the SF-102 host. The system compares the detected speed with three configurable thresholds and applies the corresponding warning response.

SF-102 forklift speed limiter three-level overspeed warning process
  1. Measure

    The wireless sensor detects wheel movement. The calibrated wheel diameter is used to calculate vehicle speed.

  2. Warn

    As each preset threshold is exceeded, the audible and visual alarm provides progressively stronger alerts.

  3. Limit or Lock

    When optional throttle-control hardware is installed, Level 3 overspeed can trigger speed limiting or the configured lock response.

01Speed Detection
02Threshold Comparison
03Audible & Visual Warning
04Optional Speed Control

Applications

Suitable for industrial sites that need configurable forklift speed warnings and controlled driving behavior.

SF-102 forklift speed limiter used in warehouse and logistics operations
Application 01

Warehouses & Logistics Centers

Helps reinforce speed rules in aisles, storage areas, loading zones and other active material-handling spaces.

SF-102 forklift overspeed alarm used in a manufacturing facility
Application 02

Manufacturing Facilities

Provides graded warnings for forklifts operating around production lines, equipment and shared work areas.

SF-102 forklift speed limiter used in industrial yards and workshops
Application 03

Industrial Yards & Workshops

Supports speed management for electric or fuel-powered forklifts operating across indoor and outdoor work zones.

Technical Specifications

Core electrical, audio and environmental specifications of the SF-102 V4.00 host system.

Operating VoltageDC 10-55 V
Standby Current≤20 mA (DC 12 V)
Operating Current≤450 mA (DC 12 V)
Average Power5 W
Audio FormatMP3, 16-320 Kbps
Audio Output Power8 Ω / 20 W (typical)
Remote-Control Distance≤1 m
Alarm Sound Level≤100 dB with midrange speaker; ≤115 dB with tweeter
Operating Temperature-20°C to +70°C
Protection RatingIP65
Alarm Volume8 adjustable levels
CommunicationRS-485 expansion port

System Components & Installation

The standard system covers speed detection and warnings. Speed-limiting hardware is selected according to the vehicle’s throttle type.

SF-102 forklift speed limiter components and installation positions

Standard Components

SF-102 host, audible and visual alarm, infrared remote control, wireless speed sensor, power cable and installation kit.

Optional Control Components

Electronic throttle controller, mechanical throttle controller, relay controller, LED display and extension cable.

Installation Overview

Mount the host within the driver’s view, install the alarm above the overhead guard, secure and calibrate the wheel sensor, connect keyed vehicle power, then set the warning thresholds and complete a controlled driving test.

Host & Remote

Display and administrator controls for alarm levels, wheel calibration, volume and operating mode.

Wireless Speed Sensor

Installed on a wheel and calibrated with the measured wheel diameter to calculate vehicle speed.

Audible & Visual Alarm

Provides light, sound and voice prompts for overspeed and reversing conditions.

Configuration note: active speed limiting requires a compatible electronic or mechanical throttle controller. Vehicle compatibility and installation should be confirmed before configuration.

Configure the Right SF-102 System for Your Forklift

Tell us your forklift type, power system, throttle type and required speed-control strategy. Our team will help you select the appropriate SF-102 configuration.

Get a Quote

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SF-102 Forklift Speed Limiter FAQs

Q: What is the SF-102 Forklift Speed Limiter?
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A: The SF-102 is a forklift overspeed alarm and speed-limiting system designed for forklifts and other industrial vehicles. It monitors vehicle speed through a wireless speed sensor and provides configurable visual, audible, and voice warnings when preset speed thresholds are exceeded.
Q: What happens when a forklift exceeds the preset speed?
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A: The SF-102 provides three configurable warning levels. Depending on the speed level reached, the system can activate a flashing light, an audible alert, or an overspeed voice warning. When compatible throttle-control hardware is installed, the highest warning level can also trigger speed limiting.
Q: Can the three speed-warning thresholds be adjusted?
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A: Yes. Administrators can configure all three warning thresholds according to the vehicle and operating environment. The factory default settings are 8 km/h for Level 1, 10 km/h for Level 2, and 12 km/h for Level 3.
Q: Does the SF-102 automatically limit forklift speed?
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A: Speed limiting is available when the SF-102 is connected to a compatible electronic or mechanical throttle controller. The appropriate controller depends on the forklift’s throttle type and must be selected as part of the system configuration.
Q: What is the difference between speed-limiting mode and lock mode?
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A: In speed-limiting mode, the system works with the throttle controller to restrict vehicle speed when the Level 3 threshold is exceeded. In lock mode, continuous overspeed for the configured period can lock the throttle at idle until an administrator releases it with the remote control.
Q: Is the SF-102 suitable for electric and fuel-powered forklifts?
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A: Yes. The SF-102 supports a wide operating voltage of DC 10–55 V and can be used with electric and fuel-powered forklifts. For active speed limiting, vehicle voltage, throttle type, and controller compatibility should be confirmed before installation.
Q: How does the SF-102 measure forklift speed?
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A: A wireless speed sensor installed on the wheel detects vehicle movement and sends the information to the SF-102 host. The installer enters the correct wheel diameter during setup so the system can calculate and display the vehicle speed accurately.
Q: Can forklift drivers change the speed settings?
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A: The main settings are managed through an infrared remote control rather than buttons on the host. This helps facility managers control access to warning thresholds, wheel calibration, alarm volume, lock time, and speed-control modes.
Q: Does the SF-102 provide a reversing warning?
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A: Yes. The system includes a configurable reversing voice-reminder function that can alert nearby personnel when the forklift is reversing. The reversing reminder can be enabled or disabled through the system settings.
Q: What components are included with the SF-102?
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A: The standard configuration includes the SF-102 host, audible and visual alarm, infrared remote control, wireless speed sensor, power cable, and installation kit. Throttle controllers, relay controllers, LED displays, and extension cables are optional components.
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