ZoneFirst Invis-A-Stat Smart Light Switch Thermostat User Guide
LST User Guide
The LST is a first of its kind Smart Light Switch Thermostat used as both a thermostat for each zone as well as
a light switch. The LST can be installed in a traditional junction box in place of a single pole light switch.
For detailed instructions and videos on how to install the LST, please visit https://www.zonefirst.com/invis-
Listee’s name
Model number
Electrical ratings
Input
: Zonefirst
: Invis-A-Stat
:
: 120-230V~,15A, 60Hz
Max Load for Different Load types :
A. Incandescent /Halogen : 500W-120V~
B. LED/CFL
: 150W-120V~
: 3A-230V~
Ambient temperature Range : 0°C to 50°C.
C. Fluorescent
All models in this section are eligible to bear the Canadian Listing Mark.
The use of this Mark indicates compliance with the requirements in the CSA E06730-1 standard.
Installation Instructions :
A. Instructions for field wiring See Figure.1 below:
Figure 1: Installation Diagram
Wiring Instructions:
●
●
●
●
Connect Load connection (Red) to the Light
Connect Neutral(White) to the Building Neutral and another end of the light
Connect Line (Black) to Line input from the building
Terminate the Ground /Earth wire to the Green wire
Method for mounting the control
Purpose of Control
Pollution Degree
: Human Touch directly or by Mobile application.
: Operating Control
: “PD2”
: 4000 V
Impulse Voltage
| General | Details |
|---|---|
| Name | ZoneFirst Invis-A-Stat Smart Light Switch Thermostat User Guide |
| Make | ZONEFIRST |
| Language | English |
| Filetype | PDF (Download) |
| File size | 0.11 MB |

Zonefirst Invis-A-Stat Light Switch Manual: Questions and Answers
What is the maximum wattage for Zonefirst Invis-A-Stat Light Switch with incandescent bulbs at 120V?
500W at 120V~.
Where does the Red wire connect on the Zonefirst Invis-A-Stat Light Switch?
Connect Load connection (Red) to the Light.
| Wire | Connection |
|---|---|
| Load connection (Red) | The Light |
| Neutral (White) | Building Neutral and the other end of the light |
| Line (Black) | Line input from the building |
| Ground/Earth (Green) | Terminate to ground |
Can I use the Zonefirst Invis-A-Stat Light Switch with 150W of LED bulbs at 120V?
Yes. Maximum LED/CFL load is 150W at 120V~.














