Tendo Emergency

Designed especially for LED fixtures

3 hours maintained current output

Automatic current setting for maintained constant output

New: self-test and DALI options

Slim profile for easy installation

Integrated electrical protection







Product Description:


The Serenity Tendo® emergency lighting range is designed to equip a wide range of LED fixtures with an emergency feature. The Tendo is suitable for most standard LED luminaires and arrays containing from 2 to 20 LEDs in series (6 to 55V DC).

The Tendo range is designed to be inserted into the low voltage connection between the mains LED driver and LED fixture allowing LEDs to be operated as normal under mains healthy conditions or at a reduced light output in emergency mode.

The Tendo range automatically adjusts the output LED current to provide the best match between the battery and the load, providing maximum illumination whilst ensuring full battery duration. The Tendo range is compatible with a wide range of LED emitters and arrays such as Philips Fortimo ranges, Bridgelux COB ranges, Citizen 4-41W ranges, GE Infusion, Xicato and many others.

The sytem is available as a conversion kit of required parts to fit in your own housing, a self contained option with the parts installed in a metal chassis or as individual inverters only. The inverter/charger module is housed in a standard HRN sized case and comes complete with 8 way and 4 way terminal blocks. The enclosed options come with flying leads to insert within your system and mains supply. These allow connection of unswitched 240V supply, charge indicator LED, two leads in from the maintaining LED driver, and two out to the LEDs themselves. Additional connections are avilable on the conversion kits and individual inverters. 

For complete details on installation and maintenance please refer to the product user guide.

Technical Specifications:


LED Voltage Range: 6 - 55V

Number of LEDs in series: 2 - 20

LED Current Limit: 320mA

LED Voltage Limit: 55V DC


Mains Supply Voltage:  230-240V AC

Mains Power: 5W

Power Factor: 0.9

Mains Frequency: 50Hz


Battery Current Limit: 1100mA

Charge Current: 200mA nominal

Recharge Period: 24 hours

Battery Type: 3 x 4Ah D Cell Ni-Cd (NiMH available by special request)

Battery cut-off voltage: 3.0V


Dimensions (module): 230mm x 52mm x 30mm


Operating Ambient Temperature:  0ºC to + 50ºC

Maximum Case Temperature:  +70ºC
Maximum Battery Temperature:  + 55ºC



Integrated System
Technologies Ltd
Serenity House
55 Wellington Crescent

WS13 8RZ

Designed and manufactured in the UK, the leading iDrive® LED driver range comprises mains dimmable, DALI+, 1-10V,DMX and RDM solutions in ranges of 4W to 1000W of output power, with constant current and constant voltage options available.
The range is ideally suited to white, variable white and colour lighting fixtures for architectural, entertainment, retail, commercial and domestic applications.
IST are global pioneers in the design of intelligent iDrive® LED drivers and Serenity™ OEM LED lighting solutions for commercial, office, architectural, retail, entertainment, outdoor and domestic white light and RGB-W/A applications.
IST serves an international customer base, including several multinational lighting companies, providing bespoke or off-the-shelf solutions.
lighting solutions west midlands uk