Wheelock

Eaton-Wheelock is one of the major companies that makes notification devices, the others being Gentex, Simplex and System Sensor.

## History:

Some of the earliest signals produced by Wheelock were the A-1 series of AC-powered, dual-projector electromechanical horns. In the early 1970s, Wheelock introduced the 31 (AC-powered) and 34 (DC-powered) series of electromechanical horns. Around 1976, Wheelock created the 7001 (2-wire, flush-mount DC), 7002 (2-wire, surface-mount DC), 34+WS (4-wire, surface-mount DC), and 7004 (2-wire, surface-mount AC) electromechanical horn/strobes. These were the first fire alarm signals to use xenon strobes instead of incandescent lights. The horn and strobe on the 7001 and 7002 models are wired in series, causing the horn to produce a distinctive "skipping" sound when the strobe flashes, similar to the "March Time" code. For power-up, signals either had pigtail wires or screw terminals. Models with terminal connections had the letter "T" in their model numbers (e.g. 34T, 7002T). In late 1984, Wheelock redesigned the horn's grilles, making them vandal resistant, and shortly thereafter, pigtail connectors were discontinued. This product line became extremely popular among third-party security companies, such as Honeywell, Ademco, and Cerberus Pyrotronics (now part of Siemens AG). In 1994, Wheelock discontinued this series, because their low-intensity strobes did not meet the new light distribution requirements of the ADA. The 31T is still in production today for general signaling purposes. (The red 31T 115 does fit all the requirements for a Fire Alarm signal however, and can be placed on a strobe plate without issue.) Cooper Wheelock also produces several bells as well as speakers, synchronization modules, chimes and voice evacuation products. Around 2006, Cooper Industries bought Wheelock. Cooper Wheelock does not manufacture fire alarm control panels, smoke detectors, heat detectors, or pull stations. Many fire alarm control panels are compatible with Cooper Wheelock's line of notification appliances and other products.

## Lawsuit against Siemens:

In the year 2008, after Siemens bought out Faraday and Cerberus Pyrotronics, Cooper-Wheelock sued Siemens for patent violations, claiming Faraday devices were too similar to Wheelock devices. Siemens lost the lawsuit, and as a result, they could not manufacture they're own devices, and instead they had to rebrand Wheelock devices for 8 years. However as of 2021, Siemens still rebrands Wheelock's devices.

## Today:

As of today, Wheelock is owned by the company Eaton. Formerly, they were owned by Cooper Industries.

## Current Devices:

* Wheelock MIZ Series
* Wheelock MT-12/24-MCW/MCC (weatherproof only)
* Wheelock AMT-12/24-MCW/MCC (weatherproof only)
* Wheelock AS (weatherproof only)
* Wheelock 31T
* Wheelock Motor Bell series
* Wheelock SM/DSM sync modules
* Wheelock RSSWP weatherproof remote strobes
* Wheelock RSSP strobe plate
* Wheelock Eluxa Series

## Former Devices:

* Wheelock AS series (Non-Weatherproof models)
* Wheelock N Series
* Wheelock MT-12/24-LSM/SLM/LS/MS/IS
* Wheelock AMT-12/24-LSM/SLM/LS/MS/IS
* Wheelock EH series electronic horns
* Wheelock EHS series
* Wheelock 34/34T mechanical horn
* Wheelock 7001/7001T
* Wheelock 7002/7002T
* Wheelock 7004/7004T
* Wheelock AES series
* Wheelock MIZ series (strobe models)
* Wheelock E series (E50/E60/E70/E90)
* Wheelock ET series (strobe models)
* Wheelock EH series high fidelity speakers
* Wheelock HS and HS4
* Wheelock Z series (patents now owned by Siemens)
* Wheelock 712/24 chimes
* Wheelock CH-DF1 series chimes
* Wheelock SR Series
* Wheelock RS Series
* Wheelock RSS Series
* Wheelock CH series (CH70/CH90)
* Wheelock Exceder Xenon series
* Wheelock Exceder LED series
* Wheelock Exceder LED3 series
* WIP

## Gallery:

Wheelock LSTRWheelock 7002T-24 (1st generation)Wheelock 7002T-24 (2nd generation)