Energy Saving Device ESD950 - Installation & Specifications

Energy Saving Device ESD950 - Installation & Specifications


Energy Saving Device (ESD) Datasheet

Note for Installers : Updates to wiring requirements for Air Conditioners

For those who have previously used our ESD 910, 920s, or 930s, you should be aware that installation standards have changed. As a result, our ESD energy-saving devices have also undergone changes. We can no longer supply 240V directly to air conditioning units via an HVAC 240V output. This change is due to new regulations imposed by air conditioning unit manufacturers. Powering on/off your AC units via direct 240V can void your warranty.

Essentially, new air conditioning units require signal level (soft) on/off to maintain the air conditioner warranty. For retrofitting purposes, if it is absolutely necessary, air conditioners should be powered with a separate 240V relay which is triggered via a signal level output from the ESD 950's yellow and blue signal wires.  It should be noted however that doing so may void your AC units warranty. 

Your lighting, fridge, and other devices can still  be powered through the ESD 950's 240V output.
Please refer to our wiring diagrams below for more information.


Energy Saving Devices (ESD) are located inside the room to activate room lighting, power and air conditioning (A/C) circuits. ESDs are activated by inserting the room key card into the ESD socket. 
KAS Energy Saving Devices have two main features. These features are becoming an industry requirement in new buildings to significantly reduce power consumption. 
Supports the latest technologies including:
  1. RFID MIFARE technology

Figure 01

ESD Image

Technical Specifications


220-240V AC 50Hz 

Number of Switching Relays

2 [Mains Power, A/C Air Conditioner]

Mains Power Switching Relay

Rated to 16A

A/C Switching Relay

Dry contact (3 coloured wires) 

Reed Switch

Dry contact (2 black wires)

Working Temp

-10C to 60C

Working Humidity

10% - 95% RH


W86mm x H86mm x D46mm (Bounding box)

Card Read Time


LED Display

ON when no card is present, OFF when card is present

User interface

1 x Blue LED

Data Identification enabled

Yes (Mifare Sector 1)



Installation fitment

Mounting C-Clip supplied

Default egress time delay

15 seconds (Adjustable to optional 30 seconds)

Australian SAA certified



Data Identification

Data Identification (DI) allows the room key to activate the ESD only. The room keys are encrypted when shipped from KAS. Data Identification is Standard for all ESD models.

Cards to activate ESD:

  • KAS key cards ONLY

Cards that does NOT activate ESD:

  • Business cards
  • Plastic cards
  • Blank Mifare cards
  • Mifare cards programmed to other lock systems

Wiring Diagram

Installation Fixture

Application:  To securely mount the Energy Saving Device to a Gyprock or Plaster board wall. 

Hole Dimensions: 54 mm x 54 mm 

Suitable Wall Board Thickness: 10 mm-13 mm thickness 

Installation Fixture Instructions: 

  1. Locate the required position normally inside the entrance door.
  2. Trace internal C-Clip shape on the wall and mark screw holes
  3. Cut out the square with a gyprock saw - and cut out slots for the screw holes. 
  4. Wire the ESD, and use screws fix onto the plaster wall using the screw holes on the C-Clip.
  5. Turn C-Clip upside down, line up the screw holes and trace the internal C-Clip shape again to form a square
  6. Insert C-Clip through the hole holding onto the 2 tabs that are coming off the bottom of the C-Clip facing the installer and fix the mounting tabs onto the plaster/gyprock wall.

RC Snubber


It is recommended that ESDs are installed with an RC Snubber across the switching contact. Please see ESD-Addendum-RC Snubber technical note for more information.

RC Snubber component is provided with each ESD.

Pre-Wiring Requirements

The following items are the pre-wiring requirements for each room. Please supply this information to your electrical contractor during the wiring planning phase and well prior to the electrical installation phase.

For any additional information please contact KAS Technical Support. 

  1. 240V AC power supply cable to power the ESD. The normal location for the ESD is normally just inside the main entrance door close to the light switches. 
  2. 1 x Twin 240V electrical cable from the ESD location to the sub-board contactor (relay) for lights/power control. 
  3. 1 x Twin cable running from the ESD location to the A/C unit (Cat-5 cable suitable). 
  4. 1 x Twin figure 8 speaker wire running from ESD location to desired reed switch locations (connected in series)

Electrician to Supply

  1. 240V Contactor(s) (relays) to sub-board for power and lighting control
  2. Any additional dry contact activated relays that may be required at the A/C unit
  3. Cabling to all locations 

KAS Supply

  1. Energy Saving Device
  2. RC Snubber (Yellow) for each ESD
  3. Mounting C-Clips
  4. Fixing Screws
  5. Reed switches (as per quotation)
  6. Optional: Data Identification Programming Card (as per quotation) 


To download a PDF Click Here

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