The AlarmFob is designed with LoRa long-range/low-power technology, which allows for up to 1000 feet of open-air wireless range.
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AlarmFob Introduction

AlarmFob Button Features
Regarding YoLink features, each button has the following capabilities:
Short-press and long-press actions (two per button X four buttons = 8 actions)

Directly control a YoLink device like a relay or siren, a light switch, plug or lock (for example, unlock a smart deadbolt or turn off a light switch)

Send a notification (for example, send a text message to family members, or play a text-to-speech message on SpeakerHubs)

Activate scene (for example, scene that locks doors and turns on porch light) or control Alarm Strategy (arm or disarm security devices)


FAQ
What is the wireless range of the AlarmFob?
Is the AlarmFob compatible?
The AlarmFob does not support integration with Alexa but the FlexFob has Alexa compatibility, enabling you to make full use of its features and access button actions as devices within the Alexa app.
Are the batteries replaceable?
Yes, the fob uses two standard alkaline AAA batteries. The battery cover is accessible from the back of the fob. After removing the screw (with a small Phillips screwdriver) gently pry off the cover with a slotted screwdriver. Replace the two AA batteries, then snap the cover back on, and reinsert and tighten the screw.
- SPECIFICATIONS
Specifications:
Power: (2) AAA alkaline non-rechargeable batteries (included)
Dimensions: 2 5/8" tall x 1 3/4" wide x 5/8" thick (67 x 44 x 16mm)
Environment Temperature Range: -4°F – 122°F (-20°C - 50°C)
Required:
1. YoLink Hub with an internet connection (wired Ethernet or 2.4GHz Wi-Fi).
Refer to the Hub user guide for additional information
2. Smartphone or tablet running iOS 9 or higher, Android 4.4 or higher
3. Tools Required: None
4. Installation Difficulty Level: Easy
Hassle-Free Refunds
Return within 30 days for a full refund
2-Year Warranty
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Easy DIY Installation
Simple and clear do-it-yourself installation
Lifelong Customer Support
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Hubs
First time with YoLink? Make sure to include a hub to begin your smart YoLink Home system, or take a look at our Starter Kits.
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Let customers speak for us
from 1369 reviewsSet up is pretty great in terms of ease & quickness. It was confusing to figure out how to get sensors to actually talk to the siren alarm but the agent - Genevieve - was very helpful in walking me thru those 14 steps. Maybe I missed it but it would great to have a visual guide that gives easy instructions on that part.
Thanx so much!

Using it to lock and unlock doors at the office. Works just like it says and was easy to setup and get working.

I have not installed yet but when I do I will send a review

Really gives you peace of mind to know that all fridges and freezers are working in my house and also have the water sensor in all risk areas which is nice

Very pleased with how the sensor works. Even more pleased with your customer service - I can always reach a live person who capably answers my questions.

I have purchased a couple dozen YoLink Water Sensor 2 and Water Sensor 4 units. They all connected to the hub and app immediately, first time, with zero issues. They all work perfectly and they easily connected to a YoLink automated water valve with device-to-device (D2D) pairing. This allows a leak detector to shut off the main water valve with no internet and no hub connection. I've had zero false alarms from the couple dozen sensors I have deployed across 2 homes. I absolutely will buy more YoLink products.

Motion Sensor 3-Pack, YoLink Hub Required!

These things are great. Cover a nice area with the optional 10' extension. Wish I would have bought more of these originally instead of the leak 1 sensors.

Simply great execution. Upgraded from a Honeywell ProSeries that lacked connectivity. Easy wire switch and an incredibly intuitive app made for an easy transition. Now I can turn the heat up just before my arrival even with dynamic travel plans. A great efficiency booster!

Searched everywhere for a solution to the random water pipe leaks costing thousands of dollars in our apartment complex. When coupled with the bulldog valve and detectors, they fit the bill for saving us from large destructive flood events. The speaker hub being able to tell you where the leak is saves searching so you can get straight to the problem. Great pro

Temperature & Humidity Sensor 3-Pack, Hub Required!

Works just like the website and video says it works. no problem:)

Our block of units has been plagued with water leaks for a few years now and this system will hopefully detect leaks before they become floods. We are on our third rebuild after leaks both from our own unit and those above. I showed the system to other owners and they decided we would all fit them to our units given the history and costs of repairs. Insurance may even reduce if we present our case. Highly recommended.

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The Alarm Fob works great. Thank you. Dave
AlarmFob Smart KeyFob
All good
Works great. Very little delay. Tidy on keyring.