Litewel Electronics India Pvt Ltd
Emergency Light Manufacturer and Specialist in Mumbai, India

552 221 05 | Elevator Emergency Light and Inverter

552 221 05 is a remoted mounted Elevator Emergency Inverter. This unit comes with a convertor for use with a 9W CFL Light as well as modules for Alarm and Chime to be used for Emergecy Operation. This unit additionally has a provision for 12V outout which can be used for Intercom Operation during an Emergency.

Features include,

  • Maintained Elevator Inverter Emergency Light | works on both mains and battery

  • Split type unit with remote mounting

  • Self Timer Function for Cut-off

  • Industry Standard Product adopted by OTIS Elevators

Availability: In stock


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  • DC model with instant Emergency light 'ON' at A.C. supply failure. Reverts back to battery charging mode on power resumption.
  • Split Type consisting of : 1) Main Unit 2) PL Lamp assembly 
  • Regulated battery charging with Constant Voltage Tapering Current Characteristics and goes into Trickle charge when battery attains full charge.
  • Unique TBP ( Triple Battery Protection ) Features:-
    • Automatic low battery cut-off.
    • Over-Voltage Protection.
    • Special Electronic battery isolation circuit ensuring:
      • Battery does not accidentally or otherwise go into deep discharge thereby optimizing battery life and ensuring product performance in areas of frequent power failure.
      • No current drain after switch-off. Partial battery self recovery even without charging.
  • A.C. Triggered automatic reset function.
  • The 12V inverter and PL Lamp assembly can be mounted at any suitable location.
  • Can be used as a Centralized Emergency Light with  6 - 8 PL lamps.
  • The PL lamp illumination is uniform throughout, till battery cut-off stage.
  • Uses high efficiency Osram/GE compact fluorescent PL lamp.
  • Auto current limiting in the absence of PL lamp/broken PL lamp.
  • Corrosion resistant powder coated metal body.
  • Field proven design.


  • Lamp : 5W / 7W / 11W / PL Lamp or 20W Fluorescent Tube.
  • Provision for Switching OFF Emergency Light  when required.

Technical Specifications

  • A.C. supply (for charging battery ) : 240 VAC ; 50/60 Hz.
  • Battery : - Sealed lead acid rechargeable maintenance free battery.Capacity : 12V 7AH.
  • PL Lamp : GE/OSRAM : 9W/6500k
  • Backup Time : 6hrs - 8 hrs
  • Accessories:
    • 12V invertor & lamp assembly.
    • Connecting cables.
  • Dimensions:
    • L -175mm
    • B - 140mm
    • H - 125 mm

Additional Info

Additional Info

Country of Manufacture India
Color Gray
Size M

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18 Months Warranty

18 Months Warranty

Litewel offers an industry leading 18 month warranty* across its entire product range.

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Unbeatable Reliability

Unbeatable Reliability

Our products have field proven reliability, with more than 50,000 units currently in the field and some of them in use for over 10 years

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Eco Friendly

Eco Friendly

With ROHS compliance and newer technologies such as LEDs, our products have a greater impact on conserving the environment.

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