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    Inovonics EN1941 & EN1941XS — EchoStream RF Module Datasheet

    September 08, 2026 2 min read

    Datasheet for the Inovonics EN1941 and EN1941XS EchoStream RF modules, universal one-way wireless interface modules for security and automation applications.

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    Full text manual (for reference)

    Datasheet for the Inovonics EN1941 and EN1941XS EchoStream® RF modules — universal one-way wireless interface modules for security, building automation, and industrial applications.

    Overview

    Inovonics EchoStream RF modules are designed to easily interface with virtually any control, command, or monitoring application. FCC and IC approved.

    • EN1941 RF module — a universal one-way RF module with two alarm input pins, allowing dual-input use. Suitable for call notification and any switch or alarm condition needing wireless transmission.
    • EN1941XS Serial RF module — a universal one-way RF module transmitting up to 50 bytes of user-defined serial data. Connects to a serial interface to transmit variable data such as temperature, humidity, pressure, or liquid levels to a head-end application controller.

    Why Inovonics Wireless

    The Inovonics Commercial Mesh Network is purpose-built for commercial applications, providing a cost-effective solution across a wide range of use cases.

    • Reliability — EchoStream 900MHz radio uses frequency hopping, spread spectrum technology to handle a cluttered wireless environment.
    • Flexibility — the self-configuring mesh network adapts to changing floor plans in minutes; new sensors can be added as fast as they can be mounted.
    • Scalability — a backbone of intelligent repeaters extends coverage to thousands of sensors across entire commercial campuses.

    Technical Specifications

    Category Specification
    Power requirements 2.4 to 5.5 VDC, 100mA minimum. Average current draw 10µA; peak current draw <100mA (assumes 3-minute check-in messages and infrequent alarms)
    Pitch 2.54mm pin spacing
    Pin functions Reserved (x2), Secondary Alarm, Tamper Input, Reset Input, Power, Ground, Primary Alarm, LED Contacts, plus 3-pin frequency and 2-pin N/O connections, and Antenna
    Physical dimensions Approx. 2.525" x 1.3" x 0.5"
    Operating environment -4° to 140°F, up to 90% relative humidity, non-condensing
    Frequency options 915-925 MHz (Australia); 921-928 MHz (New Zealand); 902-928 MHz (North America); 868MHz also available for European applications (EE1941/EE1941XS)

    System Requirements

    EN1941 — RF Module

    Requires use of an Inovonics EchoStream receiver. Request the One-Way Binary RF Module Developer Guide for complete integration requirements.

    EN1941XS — Serial RF Module

    Requires an RS232 logic-level serial interface with a remote application controller to provide serial data to the module. Requires use of an EN6040 network coordinator or EN4000 serial receiver, plus a VAR-developed application controller supporting the serial messages. Request the One-Way Serial RF Module Developer Guide for complete integration requirements.

    Notes

    • Range and performance depend on the structure and environment in which the product operates.
    • Continual enhancements may cause specifications to change without notice.

    Manufacturer: Inovonics. Phone: 303-939-9336 • Toll-Free: 800-782-2709 • Email: sales@inovonics.com. RoHS compliant.