Question 1

In auto mode does the fan turn off after the set number of minutes, or does it stay on till the relative humidity drops below the set level?

Accepted Answer

After the set number of minutes, if you relative humidity still above the set level, the fan will stay on until below the set level!

Question 2

Is this easy to install? also: what if i only have white/black/ground wires, not blue?

Accepted Answer

It isn't too hard to connect this.  The switch comes with a blue (and black and white) "pigtail" to make the connections to the wires in the wall.  You will need to connect the blue wire to the one that runs to the fan (load side of the switch) and it is shown as blue in the instructions, but was black in the wall on mine.  The black wire off the switch connects to the incoming power, also black (line wire).  The white wire is connected to the other white wires in the wall.  Be sure to turn everything off before working on it and check that the power is off with a meter since you have to touch the wires to connect them with wire nuts (those were provided).  Hope that helps.

Question 3

Is this switch UL rated?

Accepted Answer

Yeah, I don't think so. There is no indication of UL certification anywhere on the device or package, and there is no ground connection - despite the fact that there's a large metal mounting tab. I connected a ground wire to the lower mounting screw to correct this. (Not needed if you are mounting in a grounded metal box) I doubt that UL would certify a device that isn't grounded. Other than this oversight, it's a very well constructed device, so I went ahead with the installation.

Question 4

My contractor lost the instruction. Where can I find the instruction manual online?

Accepted Answer

https://m.media-amazon.com/images/I/91mYm5gXeFL.pdf

Operation Mode	ON-OFF
Current Rating	16 Amps
Operating Voltage	120 Volts
Contact Type	Normally Open
Connector Type	Screw Terminals
Brand	Ortis
Terminal	Screw
Item dimensions L x W x H	25 x 25 x 51 Millimeters
Circuit Type	1-way
Actuator Type	Push Button
Contact Material	Metal
International Protection Rating	IP54
Number of Positions	6
Lower Temperature Rating	1 Degrees Celsius
Controller Type	Push Button
Control Method	Touch
Connectivity Protocol	X-10
Colour	White
Net Quantity	1.0 Count
Number of Items	1
Manufacturer	Ortis
Country of Origin	USA
Model number	HS
Specific Product Use	home
Item Weight	45.4 g
Product Dimensions	2.54 x 2.54 x 5.08 cm; 45.36 g
Item model number	HS
Item Height	2 Inches
Item Width	1 Inches
Are batteries included?	No

[New Generation] Humidity Sensor Switch, Ortis in-Wall Bathroom Fan Automated Control Switch, Air Moisture Detection, Neutral Wire Required, White, 120V/220V

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