Features & Support

Setup in Minutes

1. Plug it inConnect the USB-C power cable and wall adapter, then slide the power switch on.
2. Wait for a signalA blue light blinks while searching for cellular service. Once it turns solid, the connection is established — typically within 90 seconds.
3. Register your deviceScan the QR code on the back of the monitor or visit iot.hyggeapps.com to create an account and register the device using its serial number.
4. Set your alert rangesConfigure your temperature, humidity, and power alert thresholds in the portal. Add up to 5 users who should receive alerts.

1. Product Overview

The Hygge Monitor is a cellular-connected environmental monitoring device designed for indoor use. It continuously monitors temperature, humidity, power status, and water/leak events, and sends real-time alerts via SMS and email through the Hygge Apps cloud portal. Each monitor is sold with it's own cellular plan and does not require a seperate cellular service contract.

1.1 Equipment Type

Information and Communication Technology (ICT) equipment — IoT environmental sensor.

1.2 Intended Use

The Hygge Monitor is intended for indoor residential or commercial use by general consumers. It must not be used outdoors or in environments outside the rated conditions listed below.

1.3 Technical Specifications

Parameter	Value
Model Number	H3
Power Input (Device)	5 VDC, 2A (via USB-C)
Wall Adapter Input	120 V AC, 60 Hz
Power Source Rating	ES1 / PS1
Internal Battery	Lithium (non-removable, for backup operation)
Operating Temperature Range	0°F to 120°F (-18°C to 49°C)
Humidity Range	0–100% RH
Max Altitude	< 5,000 ft (1,524 m) above sea level
Installation Location	Indoors only
Mounting Height	4 to 6 ft (1.2 to 1.8 m) above floor
Connectivity	Cellular (automatic)
Alert Methods	SMS and Email

2. Package Contents

Verify the following items are included before installation:

• Hygge Monitor, Model H3 (1×)
• Leak detection cable — white rope with black wires on each side (1×) (Optional)
• Temperature & Humidity probe (1×) (Optional)
• USB-A to USB-C power cable (1×)
• 5V, 2A USB wall adapter (1×)

ℹ Note

If any item is missing or damaged, do not attempt to operate the device. Contact Hygge Apps support at contact@hyggeapps.com before proceeding.

3. Symbol Definitions

The following symbols may appear on the product label or enclosure. Their meanings are explained below.

Symbol	Meaning
5V ⚡ 2A	Rated input: 5 volts DC at 2 ampere. Use only a power source with these ratings.
⚠ (Warning Triangle)	Refer to documentation. Important safety or operational instruction applies.

4. Installation Instructions

⚠ Before You Begin

Only install indoors. Outdoor installation is not permitted.

Ensure the installation location has a relative humidity within 0–100% (non-condensing).

Install at an altitude below 5,000 ft (1,524 m) above sea level.

Mount between 4 and 6 feet (1.2–1.8 m) above the floor.

Do not mount inside enclosures that restrict airflow.

4.1 Device Registration

• Scan the QR code on the back of the device or go to https://iot.hyggeapps.com. If you do not already have an account you will first need to create one. After you have logged in you will need to register the device. Locate the serial number on the back of the device.
• With the serial number located, click the “Register New Device” link on the top right of the “Devices” page and enter in the serial number. Follow the steps on the webpage to complete the registration.

4.2 Wall Mounting

The Hygge Monitor is designed to be mounted on a wall at a height of 4 to 6 feet above the floor. Ensure the mounting surface is flat and capable of supporting the device.

• Select a location indoors, away from direct sunlight, heat sources, and areas of potential water splash.
• Mount or hang the device on the wall at a height of 4 to 6 feet (1.2 to 1.8 m) above the floor, with cables routed downward. A wall mount is included with the monitor that can be attached to a surface with the included tape or nails.

• Ensure there is clearance around the unit for adequate airflow. Do not obstruct any ventilation openings.

4.3 Leak Detection Cable Placement (Optional Component)

The leak detection cable (white rope with black wires on each side) must be positioned correctly to detect water.

• Connect the male end of the leak detection cable to the port on the device marked “Leak”.
• Route the cable downward from the device along the wall to the floor.
• Lay the white-and-black section of the cable flat on the floor in the area where leaks may occur. This section is the water-sensing element — it must lie flat and unobstructed.

4.4 Power Connection

⚠ Power Supply Requirement

You MUST use the supplied 5 V, 2A USB wall adapter.

Do not use a power source with a higher voltage or current rating.

The wall adapter must be plugged into a 120 V AC, 60 Hz outlet.

• Plug the USB-C end of the power cable into the USB-C port on the device marked “5V 2A”.
• Plug the USB-A end of the power cable into the supplied USB wall adapter.
• Plug the USB wall adapter into a 120 V AC, 60 Hz outlet.

5. Device Operation

5.1 Powering On

Locate the power switch on the left side of the device. Push the switch toward the top of the device (opposite the cable ports) to turn it ON.

5.2 LED Status Indicators

LED Behavior	Meaning
Rapid blinking blue (on startup)	Device is searching for a cellular signal. Normal for the first 90 seconds.
Solid blue	Cellular connection established.
Single blink blue every 60 seconds	Device is connected and operating normally. After ~1 hour, this becomes the only LED activity.
Continuous blinking blue > 120 sec	Cellular signal cannot be found. Move the device to a different location.
Orange	A solid orange light indicates the battery is charging. Blinking indicates charging issue and to contact support.
Green	Indicates cellular service transmissions. Solid green indicates active cellular transmission while blinking green indicates searching for signal.
Red	Cellular modem and main processor communication.

5.3 Sensor Readings & Alerts

The device sends its first sensor reading approximately 1 minute after startup, then every 1 hour thereafter. Alerts are triggered automatically when any of the following conditions are detected:

• Temperature out of user configured range
• Humidity out of user configured range
• Power failure (outlet power lost)
• Water / leak detected at the leak cable

ℹ Testing an Alert

To generate a test power failure alert, unplug the USB power cable from the device while it is on. An alert notification will be sent within approximately 60 seconds to the user based on their configured alert delivery (SMS or email).

5.4 Accessing the Monitoring Portal

To view device readings and manage alerts, visit the Hygge Apps monitoring portal:

• Web portal: https://iot.hyggeapps.com
• Alternatively, scan the QR code printed on the back of the device.

Once logged in, you may add additional users to your device. Those users can enter their phone number or email address to receive SMS and email alerts.

6. Cleaning & Maintenance

⚠ Before Cleaning

Always disconnect the device from the power adapter before cleaning.

Do not use liquid cleaners, sprays, or abrasive materials.

Do not allow moisture to enter any openings.

• Wipe the exterior with a dry, lint-free cloth only.
• Do not submerge or expose the device to water during cleaning.
• Do not use solvents, alcohol, or chemical cleaning agents.

7. Servicing

No User-Serviceable Parts Inside

Do not open the enclosure. All servicing must be performed by qualified service personnel authorized by Hygge Apps LLC. Opening the enclosure may void your warranty and create a safety hazard.

If you believe the device requires service, contact Hygge Apps support:

• Email: contact@hyggeapps.com

8. Internal Battery Safety

The Hygge Monitor (Model H3) contains a non-removable internal lithium rechargeable battery. The battery provides backup power to support continued alert operation during a mains power interruption. Please read and follow all instructions in this section carefully.

8.1 Safe Handling

• Do not attempt to access, remove, or replace the internal battery under any circumstances.
• Do not drop, crush, bend, puncture, or apply pressure to the device in a way that could deform or damage the internal battery.
• Do not expose the device to strong impacts or mechanical shock.
• Keep the device away from liquids and moisture at all times.
• Operate the device only within the rated temperature range: 0°F to 120°F (-18°C to 49°C). Temperatures outside this range may damage the battery and create a safety hazard.

8.2 Fire and Explosion Hazard Warnings

⚠️ WARNING — Lithium Battery Fire / Explosion Hazard

Lithium batteries can cause fire, explosion, or chemical burns if misused.

DO NOT incinerate or expose this device to open flames or temperatures above 140°F (60°C).

DO NOT short-circuit the battery terminals. Never allow metal objects to contact internal battery contacts.

DO NOT crush, puncture, or disassemble the device to access battery components.

If the device swells, leaks, emits an unusual odor, or becomes unusually hot during use or charging, immediately:

• Disconnect the USB power cable.
• Move the device to a safe, open location away from flammable materials.
• Do not use the device again. Contact Hygge Apps support at contact@hyggeapps.com.

8.3 Battery Disposal and Recycling

The internal lithium battery must NOT be disposed of in ordinary household trash. Improper disposal may violate local, state, or federal regulations and is harmful to the environment.

• At the end of product life, take the entire device to an authorized electronics recycler or a retail battery collection point.
• In the United States, visit www.call2recycle.org or call 1-877-273-2925 to find a battery recycling location near you.
• In the European Union, look for the crossed-out wheeled bin symbol on this product — it indicates that this product must not be disposed of with unsorted household waste and must be collected separately for recycling.
• Contact your local municipality for information on electronics recycling programs available in your area.

9. Operating Environment & Constraints

The Hygge Monitor must be operated within the following environmental conditions to ensure safe and reliable operation:

Parameter	Value
Location	Indoors only — not rated for outdoor use
Operating Temperature	0°F to 120°F (-18°C to 49°C)
Altitude	Below 5,000 ft (1,524 m) above sea level
Mounting Height	4 to 6 ft (1.2 to 1.8 m) above floor

10. FCC

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

Caution: Changes or modifications not expressly approved by Hygge Apps could void the user’s authority to operate this equipment.

Assembled in the United States

Safety Warnings

Read all safety instructions before installing or operating this device. Retain this manual for future reference.

⚠ Fire and Heat Hazard

Do not place the device near open flames, heat sources, or in high-temperature environments.

Operating temperature range: 0°F to 120°F (-18°C to 49°C). Do not exceed this range.

Ensure adequate ventilation around the device. Do not block any openings.

⚠ Electrical Safety

Only use the specified external power adapter: 5 VDC, 2A (ES1/PS1 rated). Do not use damaged cables or adapters. Inspect before each use.

Do not operate in wet locations or where condensation may occur.

Disconnect the power adapter before cleaning or servicing the device.

The USB power adapter must be a UL/NRTL-listed Class 2 or equivalent ES1/PS1 source.

Input voltage to the USB wall adapter: 120 V AC, 60 Hz.

⚠ Mechanical and Physical Safety

Do not open the enclosure. There are no user-serviceable parts inside. All servicing must be performed by qualified service personnel.

Do not drop, crush, or expose the device to strong mechanical shock.

Mount the device securely to prevent falls.

⚠️ DANGER — Internal Lithium Battery

This device contains a non-removable internal lithium battery. Improper handling may cause fire, explosion, or serious injury.

DO NOT attempt to remove, replace, or access the internal battery.

DO NOT short-circuit, puncture, crush, bend, or deform the battery.

DO NOT expose the device to fire, incineration, or temperatures above 140°F (60°C).

DO NOT submerge the device in water or expose it to liquids.

If the device becomes unusually hot, emits smoke, or produces an unusual odor, move it away from flammable materials immediately and contact Hygge Apps support.

DISPOSAL: The internal lithium battery must be recycled or disposed of in accordance with local regulations.

Do not dispose of this device in ordinary household waste. Contact your local recycling authority or visit www.call2recycle.org for battery recycling locations.