Secure Communications
SEL solutions solve demanding security applications to protect critical infrastructure operations. Executives, engineers, and technicians alike find SEL cybersecurity solutions are an effective means to protect control system communications.
- SEL-3620 Ethernet Security Gateway

The substation-hardened SEL-3620 secures all Ethernet communication between your private networks and interoperates with existing business IT and control systems over an Internet Protocol Security (IPsec) Virtual Private Network (VPN). The SEL-3620 protects your private network from malicious traffic with an integrated firewall and strong authentication access control. Apply the SEL-3620 to satisfy your business requirements to secure routable protocols or data crossing the Electronic Security Perimeter (ESP). The Ethernet security gateway provides up to 16 VPN network connections, on 3 Ethernet ports.
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- SEL-3021-1 Serial Encrypting Transceiver

SEL-3021 Serial Encrypting Transceivers protect serial links for SCADA, Control, Maintenance, and other critical applications. FIPS 140 certified cryptographic product uses 128-bit AES Encryption to lock out cyber intruders & hackers.
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- SEL-3021-2 Serial Encrypting Transceiver

SEL-3021-2 Serial Encrypting Transceiver with message authentication protocol protects serial links for SCADA, monitoring, maintenance, and other applications. The cryptographic product uses 128-bit AES Encryption and HMAC/SHA-1 or SHA-2 algorithms to lock out cyber intruders and hackers.
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- SEL-3022 Wireless Encrypting Transceiver

Avoid exposing personnel to hazardous conditions by enabling them to control and monitor equipment from their trucks or other safe locations.
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- SEL-3031 Serial Radio Transceiver

Combines three serial data ports in one radio, allowing up to three different connections and protocols to operate simultaneously. The radio transmits data in the license-free, 900 MHz ISM band,
providing an economical communications path and backup communications system.
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