ESPE optical safety light curtains and presence sensors

ESPE industrial optical safety systems: EFP zero-dead-zone light curtains, ultra-thin EB13 barriers, SLE21 interlock switches, LGA laser scanners, and safety relays.

ESPE: developer and manufacturer of optical industrial safety systems

Shenzhen ESPE Technology has designed and manufactured industrial safety light curtains, optical barriers, and presence sensors since 2008. Operating dust-free facilities and optical test labs, the company manufactures equipment under an ISO9001 framework.

Engineering and manufacturing facilities situated in Longhua District, Shenzhen
Development of optical protection barriers aligned with Type 4 and Type 2 rules
Co-author of the Chinese national machinery safety guideline JB/T12767.1-2015
Extensive optical inspection and testing conducted within dust-free cleanrooms

ESPE EFP series Type 4 safety light curtains with zero dead zone

Flagship EFP and EFA series optical barriers protect operator hands around power presses, forming tools, and automation robots. The zero-dead-zone design delivers continuous beam coverage extending to outer endcaps, preventing hazardous access to tooling zones.

Conformity to international safety criteria including Type 4, SIL 3, and PL e
Zero-dead-zone optical layout eliminates unmonitored gaps along housing margins
Dependable optical beam synchronization functioning without inter-unit wiring
Ultra-fast microprocessor response time ensuring prompt emergency machinery stop

ESPE EB13 and EB15 series ultra-thin and compact safety light barriers

Miniature EB13 (cross-section 28x13 mm) and EB15 (thickness 15 mm) barriers fit equipment with tight space constraints. Side-facing infrared emission streamlines beam alignment and enables direct flush mounting against internal machine guard frames.

Ultra-compact profile engineered for tight technological apertures and guards
Side-emitting infrared light arrangement simplifies optical transmitter alignment
Robust resistance against factory electromagnetic interference and weld arcs
Rapid channel response intervals tailored for automated packaging machinery

ESPE electromagnetic safety door switches and interlock devices

Electromagnetic safety switches of the SLE21 family and mechanical SLM units lock protective access panels and machine perimeter enclosures. They prevent worker entry into robotic automation zones until machine motion ceases completely and energy drops.

Electromagnetic retention of protective machinery doors delivering 500 N force
Rugged enclosure built to IP67 ingress protection for harsh shop conditions
Supports series daisy-chain connection of up to twenty safety interlock modules
Positive break contact mechanism prevents contact welding during fault events

ESPE industrial measuring light curtains and safety LiDAR scanners

Optical grid arrays of the ESM and MLG series measure workpiece dimensions, count items, inspect profile contours, and separate objects on sorting lines. LGA series laser scanners monitor sectors up to 270°/320° for cell security and AGV vehicle collision prevention.

Fine optical beam pitch starting from 2.5 mm for accurate workpiece profiling
Direct controller integration via Modbus-RTU, RS-485, and industrial bus links
LiDAR detection zones providing panoramic scanning coverage up to 320 degrees
Configurable warning and safety slowdown fields for mobile AGV robotic units

ESPE safety relay modules, logic controllers and LED signal towers

Comprehensive hardware solutions from ESPE include safety relays with guided contacts, two-hand press trip controllers, and output expansion banks. WLC and WLE series LED signal towers display clear visual and audible indications of machine run status across the shop floor.

Safety relay units with mechanically linked contacts for dual-channel E-Stops
Two-hand synchronous run controllers tailored for hydraulic and mechanical presses
High-visibility LED indicator towers WLC and WLE offering 360-degree viewing
Modular expansion hardware facilitating scalable emergency stop loop topologies

Manufacturing capabilities and engineering standards of Shenzhen ESPE Technology

Established in 2008 in Shenzhen, China, Shenzhen ESPE Technology Co., Ltd. has established advanced competencies across industrial optoelectronic safety instrumentation.

The enterprise manages an integrated manufacturing pipeline spanning in-house microelectronics development, high-grade cleanroom assembly workshops, and testing laboratories.

Operating under an ISO9001 quality framework, the company ensures systematic verification across all optical emitters, receiving photodiode arrays, and dual-processor circuit assemblies.

ESPE engineers actively contribute to industrial protection guidelines across automated manufacturing sectors, having co-authored the Chinese national machinery standard JB/T12767.1-2015 for safety light curtains.

All protective products undergo evaluation against European machinery directives, achieving compliance with Type 4, SIL 3, and PL e criteria.

Furthermore, securing UL 61496 compliance for flagship models enables ESPE to equip global automated production lines across automotive and semiconductor industries.

Zero-dead-zone design and operation principles of ESPE EFP safety curtains

Flagship EFP and EFA series safety light barriers incorporate a continuous optical perimeter layout without blind margins. Conventional protective units contain mounting hardware and power receptacles at housing ends, creating unmonitored dead zones.

ESPE engineers positioned infrared transmitter and receiver elements directly against profile ends, delivering complete beam coverage along the full housing height. This allows operators to guard hazardous forming and punching tools with compact machine designs.

Within the EFP extruded aluminum housing, multi-beam optical synchronization eliminates inter-unit cabling between emitter and receiver towers.

The internal microprocessor executes high-frequency diagnostic routines across photodiode channels, promptly detecting optical lens contamination, angular misalignment, or heavy vibration.

When an operator hand enters the sensing field, solid-state safety outputs de-energize within milliseconds, initiating a prompt emergency stop.

Integration of ultra-thin EB13 and EB15 light barriers in compact automated tools

When upgrading compact machine tools, automated test benches, and laser welding enclosures, manufacturing engineers face severe space limitations for standard safety columns. ESPE developed the ultra-thin EB13 barrier with a 28x13 mm housing and the EB15 series with a 15 mm profile.

The slender form-factor and rigid anodized aluminum shell enable flush installation right next to tooling dies, avoiding interference during workpiece loading.

A distinctive feature of EB13 and EB15 barriers is side-oriented optical beam propagation, allowing flush side attachment to machinery guard walls. Narrow-angle optical emission provides high immunity against workshop ambient illumination, reflective metal workpieces, and welding arcs.

Integrated solid-state OSSD outputs feature protection circuitry against short circuits, reverse polarity, and inductive surge currents.

Electromagnetic perimeter interlocking and SLE21 safety door switches

Protecting personnel around robotic cells and automated sheet-metal processing lines requires both optical presence sensing and positive physical locking of perimeter doors.

ESPE SLE21 electromagnetic safety switches feature an internal solenoid delivering 500 N retention force, preventing unauthorized access until machine spindles halt and internal pressures vent. The metal housing carries an IP67 environmental sealing rating for harsh workshop conditions.

SLE21 switches and mechanical SLM units operate on the positive break contact principle per the EN 60947-5-1 standard, preventing contact welding during electrical faults and guaranteeing loop opening when a door shifts.

The units support emergency manual release keys and series daisy-chain connectivity for up to twenty switches, reducing field wiring complexity across extensive machine fences.

Multi-beam ESM measuring arrays and industrial LiDAR safety scanners

Beyond emergency stop functions, ESPE optoelectronics perform non-contact dimensioning and quality inspection on automated lines. ESM and MLG series measuring light curtains feature fine optical pitch down to 2.5 mm, dynamically scanning parcel profiles, dimensions, and web slackness.

Profile data streams to supervisory PLCs over RS-485 via the Modbus-RTU protocol, providing automated routing across sorting conveyors.

For panoramic area monitoring around robotic cells and autonomous mobile AGV platforms, ESPE manufactures LGA series industrial LiDAR scanners. Using time-of-flight laser pulses, the units monitor sectors up to 270° or 320° across distances spanning multiple meters.

Diagnostic software allows operators to tailor early warning zones and emergency stop fields matching vehicle trajectories.

Safety relay modules, dual-hand control units and LED signal towers

For building fault-tolerant emergency stop networks, ESPE provides safety relays with positively guided contact sets. These modules supervise emergency buttons, optical barriers, and perimeter gate switches.

If an open circuit or channel discrepancy arises, the controller inhibits machinery restart until cleared. Synchronous two-hand control units protect press operators by enforcing concurrent dual-button activation within 0.5 seconds.

To keep operators and line supervisors informed of machine status, ESPE produces multi-tier WLC, WLE, WLM, and WSL series LED signal towers. These indicators incorporate high-output LED arrays with wide diffusion angles and extended operational lifespans.

Heavy-duty polycarbonate domes resist impacts, while an integrated buzzer delivers loud acoustic warnings during machinery alerts.

ESPE and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of ESPE and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.