Inovonics EE1941/EN1941 One-Way Binary RF Module — Installation and Operation Manual

Installation and Operation Manual for the Inovonics EE1941/EN1941 One-Way Binary RF Module — a universal EchoStream RF end-device designed to interface with electronic remote application controllers (RACs), enabling any user-specific product to be integrated into an EchoStream wireless system.

Overview

EchoStream RF modules are designed to be easily interfaced with your electronic remote application controller (RAC). RF modules allow the assimilation of any user-specific application into an EchoStream system, giving integrated products full EchoStream functionality.

The E*1941 one-way binary RF modules are end-devices that use a logic-level connection to interface with your RAC, and can be used in either one-way or two-way EchoStream systems. There are two models in the family:

• EN1941 — for 900 MHz applications in North America, New Zealand, and Australia
• EE1941 — for 868 MHz applications in Europe

The E*1941 is a universal one-way binary RF module with two alarm input pins, allowing dual-input use. Input one is the primary alarm (bit 0); input two is the secondary alarm (bit 1).

Connections and Pin Functions

• Secondary alarm: Connects a secondary end-device to provide RF alarm data for any user-specific application.
• Primary alarm: Connects a primary end-device to provide RF alarm data for any user-specific application.
• Power: Connect power cabling to an external power supply of 2.4 to 5.5 volts.
• Ground: Connects to ground.
• Tamper input: Connects a tamper input to send a message when the user-specific end-device is tampered with.
• Reset input: Connects a reset input to reset the module after a frequency band selection change or N/O–N/C selection change, and to initiate an RF transmission.
• LED contacts: Use to control an LED switch. Not designed to drive LED power directly.
• Mounting hole: Used to mount the module to the user-specific product. Use only with a nylon standoff — never metal.
• Board stabilization holes: Used to mount and stabilize the board. Use only with non-metal standoffs.
• On-board antenna: Integrated; must not be tampered with — no connection to an alternate antenna is provided.
• Frequency band selection pins (EN1941 only): Place a jumper to select the frequency band for your region:
  • Left two pins = 915-928 MHz (Australia)
  • Right two pins = 921-928 MHz (New Zealand)
  • No jumper = 902-928 MHz (North America)
• ES selection pins (EE1941 only): Place a jumper to enable compatibility with ES products; remove if no ES products are used in the system.
• N/O selection pins: Place a jumper to select normally-open inputs; remove for normally-closed. Note: the module ships with the jumper unattached, defaulting to normally closed.

Output Jumper Behavior

Installation Requirements

• The RF module must only be connected at the eight-pin header or eight-pin plated thru-holes.
• All cables and wires must be routed away from the component side of the RF module.
• The integrated antenna must not be tampered with — no alternate antenna connection is provided.
• The application module must not include an integrated secondary co-located radio module.
• The antenna should face away from, or otherwise be isolated from, your device's ground plane.
• Components sensitive to RF transmission (e.g. high-gain circuits) should be isolated from the antenna to prevent interference.
• Do not mount on metal surfaces or inside metal enclosures, and avoid locations where sheet-metal ductwork or wire-mesh screens might block transmissions.
• The module should be integrated so the antenna is unobstructed by the end user's PCB, batteries, or other conductive material.

Electrical and Environmental Specifications

• Power Requirements: On-board voltage regulator; external power supply (Vcc) of 2.4 to 5.5 volts. Voltage must be sustained at 2.4V or above and supply 100 mA during the transmit cycle.
• EN1941 Current Draw: Assuming check-in messages every 3 minutes and one alarm/day on average, average current draw is 32 µA. Peak draw while transmitting is less than 100 mA. One alarm/restore cycle per hour adds about 5.3 µA average increase.
• EE1941 Current Draw: Assuming check-in messages every 12 minutes and one alarm/day on average, average current draw is 15 µA. Peak draw while transmitting is less than 50 mA. One alarm/restore cycle per hour adds about 5.3 µA average increase.
• Low Battery Condition: Battery voltage is measured every 3.5 hours; when it drops to 2.4 volts, a serial message indicating low battery is sent.
• Temperature Range: -20°C to +60°C, non-condensing
• RF Network Compatibility: EchoStream Commercial Mesh Network
• Input Requirements: Input levels must not exceed 3.3V. Open (active source): voltage between 0.75×Vcc and Vcc; passive input impedance > 5.1kΩ. Closed (active source): voltage less than 0.25×Vcc; passive input impedance < 240Ω.
• LED Requirements: Active output from the microprocessor with a 1kΩ series resistor to limit current draw. Default state is low; LED pin is pulled high during transmit.

Compliance Requirements

The EN1941 has received a Limited Modular Grant, requiring Inovonics to retain control of the final installation to ensure FCC/IC compliance. The integrator is responsible for testing the final installation to verify compliance with FCC/IC unintentional-emissions regulations, and must complete and submit an Inovonics compliance review form and documentation (plus a sample if requested) prior to marketing the product. The integrator must also properly label the product, including a statement that it contains the module along with its FCC and IC number, e.g.:

"Contains One-Way Binary RF Module FCC ID: HCQ3B6OT9OEM; IC ID: 2309A-OT9OEM"

This equipment has been tested and found to comply with Class B digital device limits under Part 15 of the FCC Rules, providing reasonable protection against interference in a residential installation. Operation is subject to: (1) this device may not cause interference, and (2) it must accept any interference received, including interference that may cause undesired operation.

Inovonics Wireless has received European Telecommunications Standards Institute approval to market these modules; they are manufactured to be RoHS compliant (EE1941). The integrator is responsible for CE labeling.

Warranty

Inovonics Wireless Corporation warrants its EchoStream products to conform to specifications and be free of defects in materials and workmanship under normal use for 36 months from the date of manufacture. Within the warranty period, Inovonics will repair or replace, at its option, all or any part of the warranted product, but is not responsible for dismantling/reinstallation charges. Warranty claims are handled through the authorized distributor, who obtains a Return Material Authorization (RMA) number. The warranty is void in cases of improper installation, misuse, alteration, accident, tampering, or repair by anyone other than Inovonics, and does not cover damage caused by other manufacturers' products used in conjunction with Inovonics products.