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SF-112 UWB Forklift Proximity Warning System

WTSAFE SF-112 is a UWB-based forklift proximity warning system for monitoring the distance between industrial vehicles and compatible personnel or vehicle tags. Configurable detection zones deliver progressively stronger warnings as separation decreases, giving drivers and tagged workers more time to respond to close-range risks.

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UWB ranging up to 100 m under line-of-sight conditions

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Three configurable proximity warning zones

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Driver alerts and compatible wearable-tag vibration

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Optional forklift speed limiting and vehicle control

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UWB Tag-Based Protection

Know When Tagged People or Vehicles Enter the Risk Zone

SF-112 is a vehicle-mounted forklift proximity warning system that measures the distance between the forklift host and compatible UWB tags. It gives operators and tagged personnel an earlier warning when they move too close.

Unlike a camera-based detection system, SF-112 identifies compatible personnel and vehicle tags. This makes tag selection, wearing compliance and installation planning essential parts of the solution.

SF-112 UWB forklift proximity warning system overview

Two Detection Tasks, One Vehicle Platform

Configure SF-112 around the people and vehicles that share the forklift operating area.

SF-112 forklift-to-pedestrian UWB warning illustration

Personnel Protection

Forklift-to-Pedestrian Warning

When a worker wearing a compatible UWB tag enters a configured zone, the vehicle alarm warns the operator. Compatible wristband or head-mounted tags can also vibrate to warn the wearer.

SF-112 forklift-to-forklift UWB warning illustration

Vehicle Awareness

Forklift-to-Forklift Warning

A compatible tag fitted to another industrial vehicle allows the host forklift to detect its approach, supporting driver awareness at intersections, doorways and other restricted-visibility areas.

Three-Zone UWB Warning Logic

The host continuously compares the measured tag distance with three configurable boundaries. Factory reference distances are 5 m, 3 m and 1 m; final settings should reflect vehicle speed, stopping distance and site layout.

SF-112 three-zone UWB proximity warning diagram

Zone	Factory Reference	Driver Response	Optional Vehicle Response
Reminder Zone	5 m	Initial light and audible reminder	Configurable speed reminder
Warning Zone	3 m	Stronger audible and visual warning	Speed limiting with compatible controller
Braking Zone	1 m	Urgent audible and visual warning	Speed restriction or stop control when properly configured

Important: automatic speed control is not provided by the host alone. It requires a compatible electronic throttle, mechanical throttle or relay controller selected for the vehicle.

Choose the Tag for the Worker and Task

SF-112 supports several tag formats. Wearable vibration is available on compatible models, while the card-type tag provides visual status indication without vibration.

SP-U01

Card-Type Tag

A compact personnel tag with LED status indication and an SOS button.

900 mAh battery
More than 120 hours continuous operation
No vibration function

SP-U02

Wristband Tag

A wearable tag that can vibrate when the user enters the configured warning zone.

600 mAh battery
More than 78 hours continuous operation
Integrated vibration warning

SP-U03

Head-Mounted Tag

A vibrating tag option designed for installation on compatible safety headwear.

600 mAh battery
More than 78 hours continuous operation
Integrated vibration warning

SF-112 personnel tag installation and forklift safety setup

More Than a Proximity Alarm

The SF-112 host combines UWB ranging with functions used for forklift operation and fleet oversight. Select only the functions required for the project.

Speed monitoring: wireless wheel sensing displays vehicle speed and supports overspeed warning logic.

Driver authorization: IC-card and fingerprint access are supported, with other authorization options depending on configuration.

Fleet connectivity: configured network versions support GPS positioning, operating records and remote management.

Expansion: RS-485 and CAN interfaces support integration with compatible vehicle and safety hardware.

SF-112 Technical Specifications

Electrical, UWB ranging, audio and environmental data for the SF-112 V4.5 host system.

Operating Voltage	DC 10-55 V
Current and Power	≤20 mA standby; ≤700 mA operating; 8 W average power
UWB Operating Band	3.25-6.75 GHz
UWB Effective Range	≤100 m under line-of-sight conditions
UWB Ranging Accuracy	≤10 cm
Audio	MP3, 16-320 Kbps; 8 Ω / 20 W typical output
Alarm Sound Level	≤100 dB with midrange speaker; ≤115 dB with tweeter
Positioning and Network	GPS 1575.42 MHz; 2G GSM 900 / 1800 MHz
Operating Temperature	-20°C to +70°C
Protection Rating	IP65

Build the System Around the Vehicle

The standard kit supports host operation, ranging and speed monitoring. Tags and vehicle-control hardware should be selected according to the required protection workflow.

SF-112 UWB forklift safety system components diagram

Vehicle Equipment

SF-112 host, audible and visual alarm, UWB ranging antenna, wireless speed sensor, GPS antenna, power wiring and mounting hardware.

Personnel and Vehicle Tags

Choose compatible card, wristband, head-mounted or vehicle tags according to who or what the forklift must detect.

Control and Safety Options

Electronic throttle, mechanical throttle or relay controllers can be combined with seat-belt and collision sensors when required.

Deployment note: confirm the forklift voltage, throttle type, desired tag quantity, warning distances, vehicle stopping characteristics and site radio environment before configuration. Final commissioning should include controlled driving and zone-entry tests.

Plan an SF-112 UWB Safety Configuration

Tell us which forklifts, pedestrians and vehicles need protection, how tags will be worn, and whether warning-only, speed-limiting or braking-zone control is required.

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SF-112 UWB Forklift Proximity Warning System FAQs

Q: What is the SF-112 UWB Forklift Proximity Warning System?
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A: The SF-112 is a tag-based forklift proximity warning system designed to detect compatible UWB tags carried by pedestrians or installed on industrial vehicles. It measures the distance between the forklift host and nearby tags, then provides configurable audible, visual, and wearable vibration warnings when a tag enters a defined risk zone.

Q: How does the SF-112 detect pedestrians and vehicles?
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A: An SF-112 host and UWB ranging antenna are installed on the forklift. Personnel carry compatible wearable tags, while other forklifts or industrial vehicles can be equipped with compatible vehicle tags. The system continuously measures the distance between the host and each tag to determine whether it has entered a configured warning zone.

Q: Does the SF-112 detect people who are not wearing a UWB tag?
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A: No. The SF-112 is a tag-based forklift proximity detection system rather than a camera-based pedestrian-recognition system. Personnel and vehicles must carry or be fitted with compatible UWB tags to be detected by the SF-112 host.

Q: What are the three SF-112 proximity warning zones?
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A: The SF-112 provides a reminder zone, warning zone, and braking zone. Each zone can trigger a different audible and visual warning response. The factory reference distances are 5 m for the reminder zone, 3 m for the warning zone, and 1 m for the braking zone, but the final distances can be adjusted for the vehicle and operating site.

Q: Can the SF-112 warning distances be adjusted?
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A: Yes. Administrators can configure the reminder, warning, and braking-zone distances according to forklift speed, stopping distance, traffic conditions, and site layout. The settings should be verified through controlled testing after installation.

Q: How are pedestrians warned when a forklift approaches?
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A: The forklift-mounted audible and visual alarm warns the operator when a compatible tag enters a configured zone. Compatible wristband and head-mounted tags can also vibrate to warn the person wearing the tag. The card-type SP-U01 tag provides LED status indication but does not include vibration.

Q: Can the SF-112 automatically slow down or stop a forklift?
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A: The SF-112 can output a vehicle-control signal when it is connected to compatible control hardware. Depending on the forklift and system configuration, an electronic throttle controller, mechanical throttle controller, or relay controller can be used for speed limiting or braking-zone control. The SF-112 host alone does not physically control the vehicle.

Q: What UWB detection range and accuracy does the SF-112 support?
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A: According to the SF-112 V4.5 specifications, the UWB system supports an effective ranging distance of up to 100 m under line-of-sight conditions and ranging accuracy of up to 10 cm. Actual performance can be affected by installation position, obstacles, radio conditions, and the operating environment.