The FlexFob 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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FlexFob 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)
Compatible with Others

Alexa

If This Then That

Home Assistant



FAQ
What is the wireless range of the FlexFob?
Do I need a hub if I am using the Alexa integration?
Yes. The Alexa integration operates via an internet connection, which is provided to the fob by a YoLink Hub or SpeakerHub. You also want to have a hub so that you can get low-battery alerts, and to perform firmware updates, etc.
Can the FlexFob be used outside?
Yes, the FlexFob is weather-resistant and can be used outdoors.
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 1767 reviewsI purchased a new base unit and sensor for my father-in-law’s water heater area along with a 5th sensor for our house near the washer. The install was easy and gives us added peace of mind. Thanks!
The sensors were easy to set up, a quick test showed they’ll sense the water quickly, and the freeze notice already helped me avoid a frozen pipe under my sink.
After a short learning curve, this is a very versatile set of products. I started small and at this time I have a dozen sensors and multiple speaker hubs. Works very well. My security posture has greatly improved.
Awesome product and awesome service
Does what it's advertised to do. I'm becoming more and more impressed with the Yolink line of products.
The sensors have been life changing. I don’t have to get up in the middle of the night to check the greenhouses. The are also very user friendly to set up and monitor.
We had a major water incident in 2024. I have been looking for a system to help prevent a recurrence.
When I came upon YoLink I wanted to give it a try because it was so much less expensive than other systems.
I purchase a control valve and a variety of water sensors. The system was easy to set up and works very well. I does exactly what I want it to do in monitoring potential water leak sources and turning off the main water when it detects a leak.
I am very pleased so far.
Works exactly as needed. Sooo easy to setup. The Engineers at Yolink have made the installation and operation easy and simple. I ordered 3 more different devices for my home.
It’s very easy to program on and off control from phone app
I bought the three pack to help me keep tabs on the temperature across the floors of the new house I moved into. So helpful to get a quick, simple, accurate measure
Added to the hub very easily. Works like a charm.
Easy to install. Works! Well thought out.
I just hope this new one lasts longer than the first unit, that one only lasted about 6 months...
About one month ago, our sump pump system, particularly the pipe coming out from the sump pump, failed. A YoLink water sensor (without a float) and YoLink alarm went off at 1:28am and woke my family up as the water started coming out of the casing and on to the basement floor.
Due to the sensor and alarm going off immediately, we were able to run downstairs (literally) and limit the damage. After starting to demo the area, we found out we were able to air everything out rather than replacing it all (no sewage - just HVAC condensate water). The sensor and alarm litereally saved us thousands of dollars and many additional headaches because we would not have woken up until many hours later when even more water made its way out of the casing on into the neighboring finished rooms.
As soon as that issue was resolved, we decided to buy a YoLink water sensor with a float in it so that we could be notified before the water made it out of the casing rather than afterward like it did about a month ago.
Boy, are we happy we got the float sensor! Less than two weeks after installing the float sensor, it went off as it was supposed to.
The sensor and YoLink alarm it's connected to woke us up two nights/mornings ago at 4:33am as the pipe from the casing came apart...again! This time though, the water hadn't made it out of the casing and there was zero water damage anywhere. We were able to contain the issue without any water overflowing out of the casing and had a plumber out that day to fix the issue, this time hopefully once and for all.
YoLink's water sensors have literally saved us from spending thousands of dollars and having a ton of much bigger headaches. We strongly recommend them. We use YoLink products of various kinds throughout our home and plan on using them for a long time.
In case you're wondering, we weren't paid for this review or compensated, directly or indirectly, in any way, shape or form. We read reviews all the time so we understand the importance of leaving reviews, good or bad, whenever possible.
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I programmed this Fob to operate my Bulldog water valve operator. I mounted next to the door leading into my garage. I can now easily turn off my water anytime that I leave home - even if it is only for a short time.