ERA Products

How to Identify Low Battery in ERA Transmitters and Sensors

Recognize low battery indicators specific to each ERA device. Understanding battery status of your ERA transmitters and sensors is crucial for maintaining reliable system performance.

Published November 19, 2021

Compatible Devices

ERA-DSTX driveway sensor
ERA-UTX universal transmitter
ERA-PIR motion sensor

ERA-DCRX Receiver Indicators

Visual Alerts

Normal operation: zone LED flashes briefly when triggered, single melody plays
Low battery warning: zone LED blinks for 10 minutes, affects only the zone with low battery

Audio Indicators

Normal operation: single melody plays when triggered
Low battery alert: melody plays twice, distinct from normal operation

ERA-PIR-SPK Specific Indicators

Normal function: single melody playback
Low battery warning: double melody playback

Recommended Actions

Monitor alert patterns regularly
Replace batteries promptly when warned
Use high-quality replacement batteries
Document battery replacement dates
Keep spare batteries available

Sources and notes

Safeguard Supply product manuals and help documents — Use the current model manual, rating label, and product page as the source of truth for compatibility, capacity, battery type, and wiring details.
FCC 47 CFR Part 15 - radio frequency devices — Useful context for unlicensed wireless devices, interference, and real-world range limitations.
OSHA occupational noise exposure overview — OSHA explains workplace noise limits and why noisy areas can require more than an audible-only notification.
CDC/NIOSH worker hearing statistics — Supports general context around worker hearing difficulty, tinnitus, and noise-exposed workers.
ADA National Network fire alarms fact sheet — Provides accessibility context for visible alarms; Safeguard doorbell strobes are notification aids and are not a substitute for code-required fire alarm systems.
U.S. Access Board ADA Chapter 7 — Reference for audible and visible alarm accessibility concepts.
OSHA powered industrial trucks hazards and solutions — Use for warehouse, loading dock, and vehicle-traffic context without implying a door alert replaces a safety program.
National Safety Council forklift injury facts — Provides real-world injury context for facilities using forklifts, order pickers, or powered platform trucks.
BLS nonfatal occupational injury and illness rates — Reference for industry-level workplace injury and illness context.
CPSC button cell and coin battery guidance — Use when discussing coin/button batteries, battery doors, warnings, and keeping batteries away from children.

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