Wheelock CH70-24MCC-FR Ceiling Mount Chime Strobe

The model number CH70-24MCC-FR does not appear in Eaton/Wheelock’s official CH Series catalog. The documented red ceiling-mount model is CH90-24MCC-FR. The CH70 family uses MCW for wall mounting, while CH90 uses MCC for ceiling mounting. The specifications below correspond to the documented ceiling model.

The Wheelock CH90-24MCC-FR Ceiling Mount Chime Strobe is an indoor audible/visible fire alarm notification appliance combining an electronic chime with a multi-candela xenon strobe. It features a red housing, clear lens, and FIRE lettering.

Product Functions

• Provides audible and visible fire alarm notification
• Combines electronic chime and strobe
• Designed for ceiling mounting
• Red housing with FIRE lettering
• Clear Lexan lens
• Xenon strobe technology
• Four selectable candela settings
• Supports synchronized strobe operation
• Multiple chime operating modes
• Operates on 24V notification circuits
• Designed for indoor fire alarm applications

Selectable Candela

The ceiling-mount CH90-24MCC-FR provides four field-selectable settings:

15 cd

30 cd

75 cd

95 cd

This differs from the wall-mounted CH70-24MCW-FR, which provides 15, 30, 75, and 110 cd.

Electronic Chime

The audible portion uses an electronic chime with a frequency of approximately:

890 Hz

Published audible output is approximately:

78 dBA peak at 10 feet

The chime provides a softer audible signal than a conventional electronic horn while still providing distinctive emergency notification.

Chime Operating Modes

The appliance supports several audible operating modes:

1 Hz

2 Hz

Coded

Temporal Code 3 (T3)

This allows the chime signal to be configured according to the requirements of the connected notification system.

Synchronized Notification

The strobe supports synchronized operation with compatible Wheelock synchronization equipment.

Compatible synchronization allows multiple strobes within the same field of view to flash together rather than independently.

FIRE Configuration

The documented ceiling configuration is:

Model: CH90-24MCC-FR

Housing: Red

Lettering: FIRE

Lens: Clear

Light Source: Xenon

Mounting: Ceiling

Function: Chime Strobe

Environment: Indoor

Electrical & Notification Information

Nominal Voltage: 24V

Operating Range: 16–33 VDC/FWR

Candela: 15 / 30 / 75 / 95 cd

Chime Frequency: 890 Hz

Audible Output: Approximately 78 dBA peak

Chime Current: 0.022 A

Strobe Current: 0.065 / 0.105 / 0.189 / 0.249 A DC

Operating Temperature: 32°F to 120°F / 0°C to 49°C

Maximum Humidity: 93% RH

Notification: Audible / Visible

CH70-24MCC-FR Datasheet