Federal Signal MSL2-120AC - MicroStat Incandescent Status Indicator, 2-High, UL and cUL, 120VAC, Amber, Clear
Federal Signal

MSL2-120AC

Alternate Item Number: msl-microstat

UPC: 782979209294


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Overview

The Federal Signal MSL2-120AC MicroStat Incandescent Status Indicator delivers reliable visual status communication for industrial control panels and equipment. Designed with a 2-high amber incandescent lamp, it provides clear, visible illumination that meets UL and cUL safety standards, ensuring compliance in demanding environments. Operating at 120 VAC, the indicator is compatible with standard industrial power supplies, reducing installation complexity. Its clear housing protects the lamp from dust, moisture, and mechanical impact while allowing the amber light to be easily seen from a distance. The robust construction and simple mounting options make it ideal for integration into panels, kiosks, and other control systems where space and reliability are critical. The 2-pole design ensures stable electrical connectivity, reducing the risk of loose contacts. Applications include machine status monitoring, alarm condition indication, and general operational feedback in HVAC systems, power distribution units, process control cabinets, and building automation. The MSL2-120AC offers a proven, cost-effective solution that enhances safety and operational efficiency with a long service life.
  • 2-high amber incandescent lamp for clear visual status indication
  • Operates at 120 VAC, compatible with standard industrial power supplies
  • UL and cUL certified for safety compliance in demanding environments
  • Clear housing protects lamp from dust, moisture, and mechanical impact
  • 2-pole design ensures stable electrical connectivity and reliable performance

Specifications

0.4
A
120
VAC
7,000
HR
9.8 H x 2.2 W x 2.2 D
IN
Amperage
0.4 A
Amperage Rating
0.4 Amp
Application
Indoor
Brand Name
Federal Signal
Color
Amber
Depth
2.2 in
Depth
55.88 mm
Diameter
2.2 in (55.9 mm)
Enclosure
Type 4X
Environmental Conditions
32 to 104 DEG F
Flashing Pattern
Steady/Flashing
Height
9.8 in
Height
248.92 mm
Lamp Life
7,000 HR
Lamp Type
Wedge
Lens Color
Amber;Amber, Clear;Clear
Lens Material
Polycarbonate
Material
Clear
Mounting
3/4-Inch NPT Pipe/Surface;3/4-Inch Pipe,Surface
Operating Temperature
32D to +104DF (0D to +40DC)
Operating Voltage
120VAC
Operating Voltage
120
Series
MicroStat
Series
MSL2
Size
9.8 H x 2.2 W x 2.2 D IN
Size
2-High
Special Features
Optional Sound Module Model MSS
Standard
UL Listed/cUL Listed
Standard
UL,cUL
Sub Brand
MicroStat
Type
status Indicator
Voltage Rating
120VAC
Width
2.2 in
Width
55.88 mm
Package Dimensions (L x W x H)
4.44 IN x 2.44 IN x 12.33 IN
Package Dimensions (L x W x H)
11.2776 cm x 6.1976 cm x 31.3182 cm
Package Weight (Imperial)
0.850 L
Package Weight (Metric)
0.386 kg
MicroStat Incandescent Status Indicator, 2-High, UL and cUL, 120VAC, Clear, Green

MSL2-120CG

MicroStat Incandescent Status Indicator, 2-High, UL and cUL, 120VAC, Clear, Green
MicroStat Incandescent Status Indicator, 2-High, UL and cUL, 120VAC, Amber, Blue

MSL2-120AB

MicroStat Incandescent Status Indicator, 2-High, UL and cUL, 120VAC, Amber, Blue
MicroStat Incandescent Status Indicator, 2-High, UL and cUL, 120VAC, Clear, Red

MSL2-120CR

MicroStat Incandescent Status Indicator, 2-High, UL and cUL, 120VAC, Clear, Red
MicroStat Incandescent Status Indicator, 2-High, UL and cUL, 120VAC, Amber, Red

MSL2-120AR

MicroStat Incandescent Status Indicator, 2-High, UL and cUL, 120VAC, Amber, Red
MicroStat Incandescent Status Indicator, 2-High, UL and cUL, 120VAC, Amber, Green

MSL2-120AG

MicroStat Incandescent Status Indicator, 2-High, UL and cUL, 120VAC, Amber, Green
MicroStat Incandescent Status Indicator, 2-High, UL and cUL, 120VAC, Blue, Clear

MSL2-120BC

MicroStat Incandescent Status Indicator, 2-High, UL and cUL, 120VAC, Blue, Clear
MicroStat Incandescent Status Indicator, 2-High, UL and cUL, 120VAC, Blue, Green

MSL2-120BG

MicroStat Incandescent Status Indicator, 2-High, UL and cUL, 120VAC, Blue, Green
MicroStat Incandescent Status Indicator, 4-High, UL and cUL, 120VAC, All Lens Colors

MSL4-120

MicroStat Incandescent Status Indicator, 4-High, UL and cUL, 120VAC, All Lens Colors
MicroStat Incandescent Status Indicator, 5-High, UL and cUL, 120VAC, All Lens Colors

MSL5-120

MicroStat Incandescent Status Indicator, 5-High, UL and cUL, 120VAC, All Lens Colors
UniStat LED Status Indicator, 120VAC, Quad-Color (Amber, Blue, Green and Red) -Available in 24VDC and 120VAC. Tri- or quad-color models. 50,000 hour vibration resistant LED light source. Available with built-in sounder (Model USIS). Surface mount and integrated 3/4-inch NPT pipe mount. PLC compatible. Indoor use only. Type 4X, IP66 enclosure. Type 1 with sounder, 60 dBa at 10 feet. UL and cUL Listed.

USI-120QC

UniStat LED Status Indicator, 120VAC, Quad-Color (Amber, Blue, Green and Red) -Available in 24VDC and 120VAC. Tri- or quad-color models. 50,000 hour vibration resistant LED light source. Available with built-in sounder (Model USIS). Surface mount and integrated 3/4-inch NPT pipe mount. PLC compatible. Indoor use only. Type 4X, IP66 enclosure. Type 1 with sounder, 60 dBa at 10 feet. UL and cUL Listed.
UniStat LED Status Indicator, 120VAC, Tri-Color (Amber, Green and Red) - Available in 24VDC and 120VAC. Tri- or quad-color models. 50,000 hour vibration resistant LED light source. Available with built-in sounder (Model USIS). Surface mount and integrated 3/4-inch NPT pipe mount. PLC compatible. Indoor use only. Type 4X, IP66 enclosure. Type 1 with sounder, 60 dBa at 10 feet. UL and cUL Listed.

USI-120TC

UniStat LED Status Indicator, 120VAC, Tri-Color (Amber, Green and Red) - Available in 24VDC and 120VAC. Tri- or quad-color models. 50,000 hour vibration resistant LED light source. Available with built-in sounder (Model USIS). Surface mount and integrated 3/4-inch NPT pipe mount. PLC compatible. Indoor use only. Type 4X, IP66 enclosure. Type 1 with sounder, 60 dBa at 10 feet. UL and cUL Listed.
MicroStat Incandescent Status Indicator, 2-High, UL and cUL, 24VDC/AC, Amber, Blue

MSL2-024AB

MicroStat Incandescent Status Indicator, 2-High, UL and cUL, 24VDC/AC, Amber, Blue

Frequently Asked Questions

What is the operating temperature range for this product?

The operating temperature range for the MicroStat is 32°F to 104°F (0°C to 40°C).

What type of lamp does the MicroStat use?

The MicroStat uses a Wedge-Type Lamp #655 as its light source.

What is the expected lamp life for the standard lamp?

The standard wedge-type lamp has a life expectancy of 7,000 hours.

Is an LED lamp option available for the MicroStat?

Yes, an optional 50,000-hour LED lamp is available for the MicroStat.

Can a sound module be added to the MicroStat?

Yes, an optional sound module can be installed in the top position of any MicroStat unit.

What is the sound output level of the optional sounder?

The optional sounder produces 93-95 dBa at 1 meter (83-85 dBa at 10 feet).

Is the MicroStat status indicator suitable for outdoor use?

No, the MicroStat status indicator is designed for indoor use only.

Is the MicroStat compatible with PLC systems?

Yes, the MicroStat is PLC compatible and designed to work with PLC outputs, including Triacs.

What are the dimensions of the MSL2 MicroStat unit?

The MSL2 unit has a diameter of 2.2 in (55.9 mm) and a height of 7.8 in (198.1 mm).

What is the part number for the replacement wedge lamp?

The replacement part number for the Wedge Lamp (#655), 28V is K8107185A.

How to Install the MSL2-120AC MicroStat™ Status Indicator

This guide provides step-by-step instructions for installing and configuring the MSL2-120AC MicroStat™ Status Indicator, including mounting, wiring, and initial setup.

Estimated time: 45m

Tools needed:

Screwdriver, Wire strippers, Multimeter

Supplies needed:

Mounting screws, Terminal connectors, Gasket

  1. Unpack and Inspect the Unit

    Carefully unpack the MSL2-120AC unit and inspect it for any damage that may have occurred during transit. If damaged, do not proceed with installation and file a claim with the carrier.

  2. Mount the Base

    Remove the colored lenses by twisting the bottom lens counter-clockwise and lifting it off. Unscrew the two Phillips head #6 screws to disassemble the sleeve from the base. Mount the base onto a 3/4" NPT pipe or a flat surface using the provided screws, ensuring it is level and secure.

  3. Make Electrical Connections

    Feed the control wires through the NPT opening in the base. Connect the wires to the labeled female terminal block plug (1-5) corresponding to the lamp positions. Ensure power is off during this process to avoid electrical shock.

  4. Reassemble the Unit

    Reattach the sleeve to the base by sliding the printed circuit board into the channels and securing it with the screws removed earlier. Ensure O-rings are in place for watertight sealing.

  5. Install Colored Lenses

    Reassemble the colored lenses onto the base unit, ensuring an O-ring is placed between each lens for a watertight seal. Twist each lens clockwise until it locks into place.

  6. Test the Installation

    Turn on the power and test the MicroStat™ to ensure it operates correctly. Verify that all lights function as intended.

Frequently Asked Questions about Federal Signal

What certifications and standards do Federal Signal products comply with?

Federal Signal products are certified across multiple international standards, including UL (Underwriters Laboratories) in the USA, CSA (Canadian Standards Association), CE (European Community), UKCA (United Kingdom), EAC (Russia), and C-Tick (Australia and New Zealand). Their products meet rigorous safety and performance standards for industrial environments, with specific compliance in electrical equipment enclosures, functional safety, and environmental protection ratings.

What is Federal Signal's warranty policy?

Federal Signal offers a comprehensive limited warranty covering most products for 1-5 years from the date of delivery, with specific terms varying by product category. Mechanical sirens, beacons, speakers, and sounders typically receive 5-year parts and labor coverage, while electronic sirens and controllers generally have 2-year warranties. All warranties require return to the factory for service, and on-site services are not included. Certain components like domes, lenses, lamps, and batteries are specifically excluded from warranty coverage.

What industries and applications are Federal Signal products used for?

Federal Signal products are used across multiple critical industrial and municipal sectors for notification, communication, and safety systems. Their product lines cover essential applications including fire alarm systems, public address and telephony, outdoor warning systems, visual and audible signals, and emergency communication networks. Key industries served include manufacturing, municipal emergency services, industrial facilities, and infrastructure environments where clear, reliable communication and safety signaling are paramount.

What technical support does Federal Signal offer?

Federal Signal offers comprehensive technical support through their dedicated [email protected] email and direct phone line at +1 708.534.4756. Their support covers a wide range of notification and communication solutions, including technical assistance for products in public address, telephony, fire alarm, visual and audible signals, outdoor warning systems, and intercoms.

What are the main product lines offered by Federal Signal?

Federal Signal offers comprehensive notification and communication solutions across multiple product lines, including Visual Signals, Audible Signals, Telephony, Intercoms, Fire Alarm, Outdoor Warning Systems, Public Address, and Initiating Systems. Their product range is designed to provide clear communications and critical process notifications that enhance safety and compliance in industrial and public environments.

What are the key features of Federal Signal products?

Federal Signal products are comprehensive notification solutions designed to enhance safety and communication across industrial environments. Their key features include visual and audible signals, fire alarm systems, outdoor warning systems, public address capabilities, telephony, and intercoms. These products provide critical process notifications, ensure safety compliance, and offer advanced technologies like secure encrypted communication, cloud-based control systems, and customizable emergency response interfaces.

What environmental ratings do Federal Signal products have?

Federal Signal products offer robust environmental ratings across multiple standards, including UL 508A, CSA, NEMA, and IEC 60529. Their enclosures are rated for Type 1, 2, 3, 4, 4X, 12, and 13 environments, with IP66 protection, and can operate in temperatures ranging from -40°F to 266°F. These ratings ensure superior protection against dust, water, corrosion, and extreme conditions for indoor and outdoor industrial applications.

What accessories are available for Federal Signal products?

Federal Signal offers multiple accessories for their signaling products, including coupling kits, cable entry adapters, indicator rings, legend plates, and mounting brackets. Key accessories include E-Box endcap kits with M20 and M25 openings, U-Brackets for dual configurations, and color-coded indicator rings in black, blue, green, magenta, red, and yellow. Additional options like adapters for NPT connections and specialized mounting hardware are also available for their Global Series signaling platforms.

What communication protocols do Federal Signal products support?

Federal Signal supports multiple industrial communication protocols including PROFIBUS DP, PROFINET, EtherNet/IP, CANopen, and Modbus RTU. These protocols enable flexible network integration across various industrial automation environments, supporting both traditional fieldbuses and modern Ethernet-based communication standards.

How are Federal Signal products typically installed?

Federal Signal products are typically installed using professional mounting configurations that include wall brackets, base stations, and specialized mounting hardware. Depending on the specific product line—such as outdoor warning systems, visual signals, or audible signals—installation involves precise mounting options like wall-mount antenna brackets, base station radio packages, and modular component assemblies. Each product configuration includes specific mounting accessories like endcaps, adapters, and terminal blocks to ensure secure and compliant installation in industrial and safety-critical environments.