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July 8-10, 2026 | Shanghai New International Expo Center
AHTE 2026

CN
SLE21 Series Miniature Safety Interlock Switch
Product Category: Electrical Automation
SLE21 series is an electromagnetic locking safety interlock switch, the misalignment constructure and strong holding force ensure an optimized solution for movable guarding doors. The switch with advantage of electromagnetic and miniature size support new solution for small equipment with smaller inertia. Non-contact feature is available in high cleanliness
and dust-free workshop like semiconductor, automobile manufacturing, beverage &food production etc.

Product feature:
1.500N electromagnetic force lock.
2.Adopt "Electromagnetic" locking and keyless constructure.
3.Permanent magnet built-in actuator .
4.Easy to integrate (max. 20sets).
5.Full perspective indicator light.
6.Small size, easy to install.
7.PL e Category 4 SIL 3
8.IP65 / IP67 protection level.
9.Non-contact without powder.

Company Profile

Shenzhen ESPE Technology Co., Ltd. is a high-tech enterprise integrating R&D, production and sales. With nearly 20 years of in-depth dedication to the industry, we have become a leading manufacturer in the industrial safety field. We provide one-stop comprehensive industrial safety solutions covering pre-sales consultation, risk assessment, safety design, installation & commissioning, and on-site acceptance.Our main products cover safety light curtains, measuring light curtains, safety interlock switches, laser scanners, safety relays, safety controllers, signal tower lights and other safety components. Supported by a diversified 3+1+N product matrix, we have served over 11,000 enterprises worldwide. Our products are widely applied in 3C electronics, lithium battery, semiconductor, automotive manufacturing, logistics, aerospace and other industries. We maintain a large market share in China and export to more than 100 countries and regions globally. Additionally, ESPE is China’s only consulting-oriented manufacturer driven by in-depth industry expertise, delivering end-to-end industrial safety consulting services. Our scope includes safety standard training & seminars, professional safety consultation, customized safety system solutions, system deployment & verification, and downtime assessment services. Committed to promoting domestic substitution, ESPE empowers the intelligent and digital upgrading of China’s manufacturing industry. The company has obtained numerous authoritative certifications and honors, such as National High-Tech Enterprise, Shenzhen Specialized & Sophisticated Enterprise, and Shenzhen Famous Brand.
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