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20k+ Happy customers

Reliable Environmental Monitoring Anywhere

Track temperature, humidity, and power status in real time — no WiFi, no hassle, always connected.

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Instant alerts anywhere.

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Multi-network 4G coverage.

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72-hour backup battery.

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Set up in minutes.

4.9 Ratings +

Reviews by 100k+ Customers

RV & Travel Monitoring

Keep your RV cool and safe with real-time temperature and power alerts.

Server Room Protection

Prevent overheating and equipment failure with instant cellular alerts.

Vacation Homes & Properties

Protect unoccupied properties from freezing, overheating, and power loss.

Greenhouses & Growing Environments

Prevent crop loss from temperature and humidity changes.

Designed for Reliability, Built for Simplicity

Cellular, Not WiFi

Works anywhere WiFi can’t. Necto connects via built-in 4G LTE and automatically selects the strongest available network.

Instant Alerts

Get notified the moment temperature, humidity, or power becomes unsafe, and when conditions return to normal.

Set Up in Minutes

Plug it in, activate through the app, and start monitoring. No SIM setup, no technical configuration.

new curated themes each month around festivals, prefectures, and holidays!

The Technology Behind Necto

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Always Aware. Always In Control.

Monitor critical conditions in real time and get alerted the moment something changes.

Multiple Contacts

Send alerts to up to five contacts, ensuring the right people are notified immediately.

Intuitive App

Monitor conditions, manage alerts, and adjust settings easily from one simple app.

Custom Alert Threshold

Set precise temperature and humidity limits tailored to your specific environment needs.

Monitoring That Adapts to Your Needs

Protection Wherever You Park

Stay informed of temperature and power conditions wherever the road takes you.

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Instant alerts if conditions become unsafe

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Monitor even when WiFi isn’t available

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Protection during power outages

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Prevent Downtime Before It Starts

Monitor critical temperature and power conditions in real time to avoid costly failures.

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Alerts for overheating and power loss

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Continuous monitoring during outages

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Early warnings to protect equipment

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Confidence When No One’s There

Monitor vacant or occupied properties to prevent damage and reduce risk.

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Detect freezing, overheating, and power loss

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Monitor multiple locations remotely

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Alerts sent to key contacts instantly

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Consistent Growing Conditions

Maintain stable growing environments to protect crops and maximize yield.

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Monitor temperature and humidity levels

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Get alerts before conditions cause damage

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Consistent oversight day and night

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Necto Temperature Monitor
Necto Temperature Monitor
Necto Temperature Monitor
Necto Temperature Monitor
Necto Temperature Monitor
Necto Temperature Monitor
Necto Temperature Monitor
Necto Temperature Monitor
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20k+ Happy customers

Necto Temperature Monitor

Track temperature, humidity, and power status in real time — no WiFi, no hassle, always connected.

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Works anywhere with built-in 4G LTE - no Wi-Fi required

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Plug-and-play setup - install in minutes

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Operates during power outages on 72-hour backup battery

Save $50.00/ 20% OFF

Device + 2 year Subscription Included

Most popular

$200.00

per sensor

CHECKOUT

Operating Range: Temperature: 0°F to 120°F, Relative Humidity: 10% to 95%, non-condensing.

Product Dimensions: 2.7"W x 2.7"H

Item Weight: 2.15 Ounces

Backup Battery Life: Rechargeable lithium battery provides power for 72 hours

Power Input: Wired AC Adapter, 5V @ 2A

Coverage in the U.S, Canada, & Mexico

Necto uses 4G LTE cellular technology to transmit data, eliminating the need for Wi-Fi. It automatically connects to available networks for reliable, always-on communication. A cellular plan is required to support continuous data and SMS messaging.

Included Service:

  • 2 years of cellular service included at no extra cost
  • No hidden fees or additional charges
  • Subscription renewal after 2 years is $6.99/month through the app

Connectivity Details:

  • Built-in 4G LTE-M SIM card for reliable connection
  • Works with major carriers, including AT&T, T-Mobile, and Cellular One
  • Coverage in the U.S., Canada, and Mexico

Necto temperature monitor

Adhesive Wall Mount

USB-C Charger

USB Adapter

Mounting screws

3 Year Warranty

Protect Your Space in 3 Easy Steps

Download the Necto app and register your device. It connects automatically to the cellular network.

Plug Necto into any standard wall outlet and mount it easily using the included adhesive.

Set your temperature and humidity thresholds and choose how you want to receive alerts.

Why Necto?

Reliable temperature and power monitoring with built-in cellular. No WiFi required. Set it up once. Stay informed, every day.

Best Value

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Reliable 4G Cellular Connection

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2-Year Plan Included. No Contracts.

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Unlimited alerts via app, text, and email

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Ready to Use. No Setup Hassles.

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72-hour backup battery

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Connects to AT&T, T-Mobile & Cellular One

Other Monitors

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WiFi only — limited range

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Overpriced subscription plan required

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Limited alert types or contacts

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Complex setup with WiFi config

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Stops working when power goes out

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Stops working when power goes out

Always on, built for real life

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No WiFi Required

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Instant Alerts

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Outage Safe

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Simple Setup

Frequently Asked Questions

Yes! The cellular temperature monitor has a 72-hour backup battery for any power failure. It sends instant alerts when power is lost and restored, keeping your vacation home safe 24/7.

Yes! You can manage multiple devices from one account. We offer enterprise terms and hardware discounts for 10+ units, ideal for multiple properties, greenhouses, or server rooms.

If an alert is triggered, the device will send updates and alerts in real time. Otherwise, the device will update the temperature, humidity, and power status on the app every 10 minutes.

No. The cellular connectivity is completely built-in to the device. You don’t need a separate cell phone contract—it’s ready to connect to the cellular network right out of the box.

No, WiFi is not required. Necto uses 4G LTE cellular technology to transmit data. This makes it the perfect solution to monitor locations where internet access is unavailable or unreliable.

You can add up to 5 email addresses and phone numbers to receive unlimited text or email notifications if critical changes in temperature, humidity, or power status occur. (edited)

Will Necto work during a power outage?

Yes! The cellular temperature monitor has a 72-hour backup battery for any power failure. It sends instant alerts when power is lost and restored, keeping your vacation home safe 24/7.

Can I manage multiple Necto devices?

Yes! You can manage multiple devices from one account. We offer enterprise terms and hardware discounts for 10+ units, ideal for multiple properties, greenhouses, or server rooms.

How often are readings updated?

If an alert is triggered, the device will send updates and alerts in real time. Otherwise, the device will update the temperature, humidity, and power status on the app every 10 minutes.

Is an existing cell phone contract required?

No. The cellular connectivity is completely built-in to the device. You don’t need a separate cell phone contract—it’s ready to connect to the cellular network right out of the box.

Does Necto require WiFi to work?

No, WiFi is not required. Necto uses 4G LTE cellular technology to transmit data. This makes it the perfect solution to monitor locations where internet access is unavailable or unreliable.

Can I add multiple contacts to receive alerts?

You can add up to 5 email addresses and phone numbers to receive unlimited text or email notifications if critical changes in temperature, humidity, or power status occur. (edited)

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