Inovonics EN1235DF EchoStream Double-Button Fixed Position Hold-up Transmitter, 902-928 MHz

When every second counts, the Inovonics Wireless EN1235DF double-button fixed-position hold-up transmitter provides reliable, false-alarm resistant emergency signaling for commercial security and monitoring systems. Built for demanding surveillance and alarm applications, this EchoStream handheld transmitter uses frequency-hopping spread spectrum across 902–928 MHz to safeguard transmissions against interference and maintain consistent connectivity with receivers like the EN4216R.

The EN1235DF pairs a rugged double-button layout with a tamper-protected back cover to prevent accidental activations and unauthorized removal. An LED flashes with each transmission for instant visual confirmation, while a 3-minute check-in maintains ongoing supervision of device status. UL listed and powered by a Panasonic CR2 battery, the compact surface-mount unit (3.0" x 1.6" x 0.72") is engineered for low-maintenance operation in retail, banking, healthcare, and institutional environments.

Add the EN1235DF to your security or alarm monitoring solution to enhance responder coordination and reduce nuisance alarms. Contact your Inovonics distributor to specify placement and integration for optimal panic and hold-up protection.

• Reduces false alarms with a rugged double-button fixed-position design for confident, intentional panic signaling
• Tamper-resistant back cover and UL listing ensure dependable security and compliance for commercial installations
• EchoStream wireless at 902-928 MHz with frequency-hopping spread spectrum delivers reliable, interference-resistant transmission for monitoring and surveillance
• Visual LED transmit indicator and 3-minute check-in provide at-a-glance status and ongoing supervision of device health
• Long-life Panasonic CR2 battery and compact surface-mount form factor enable low-maintenance, discreet placement in retail, healthcare, and banking environments