Mobile Medical Alert System

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Your mobile medical alert gets you help anywhere in the U.S.

From $49.95/month

In Stock - Ships Today

How many people will be using this system?

One User

Two Users 50% off 2nd user!

Select your payment plan:

  • Push the button, get connected to our 24/7 Command Center
  • You decide who we call in an emergency
  • 911 technology locates you if button is pushed
  • Two-way voice. As loud as a cell phone on speaker
  • Showerproof and compatible with pacemakers
  • No GPS. Want GPS? Choose PAX Mobile Medical Alert
  • No cell contract needed. Unlimited talk time and button pushes
  • Coverage wherever there is T-Mobile or AT&T service
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#1 Medical Alert By
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How Does the Mobile Medical Alert Work?

button-push-icon.alert1 medical alert systems

1. Press When you need help, press the button on the Kelsi. It wirelessly notifies Alert1's 24/7 Command Center.

what-happens-2.alert1 medical alert systems

2. Connect A trained operator from one of our Command Centers will come on the line and ask if you need help.

map-icon.alert1 medical alert systems

3. Locate & Send Help We will track your location and send the help you need. Our agent will stay on the line with you until we are sure you’re safe.

Kelsi Technical Specifications

alert1 Mobile Medical Alert System
Manual Alert
  • Mechanical touch button initiates voice call and simultaneous data transmission to call center
Network + Connectivity
  • Communication Modes: General Packet Radio Service (GPRS) / High Speed Downlink Packet Access (HSDPA) packet data, TCP/IP (Transmission Control Protocol/Internet Protocol), User Datagram Protocol (UDP) and Short Message Service (SMS)
  • Data Support: SMS, GPRS, HSDPA packet data
  • Operating bands: MHz Global System for Mobile communication (GSM)/GPRS: 850/900/1800/1900 Wideband Code Division Multiple Access (WCDMA): 850/1900
  • Transmitter Power: GSM/GPRS: 850/900 – 32.5dB 1800/1900 – 29.5dB HSDPA/Universal Mobile Telecommunications Service (UMTS): All band – 23dB
  • HSDPA Data Rates 384 Kbps upload/3.6Mbps download
  • HSPA Fallback GPRS/GSM quad band
  • Built in display light indicates cellular signal strength
    • Green: Strong signal
    • Yellow: Moderate signal
    • Red: No signal
  • Full duplex speakerphone; 60 decibels
Power and Battery
  • Operating Voltage 4.35-volt internal battery pack
  • Power Consumption:
    • Typical 200A @ 4.2V (deep sleep)
    • Typical 31.5mA@ 4.2V (SMS + UDP connection)
  • Battery life may be reduced as a result of user activity, cellular coverage, talk time, device specific settings, and device life
  • Battery light indicated battery charge
    • Green: Adequate charge
    • Yellow: Moderate charge
    • Red: Low charge
Weight and Dimensions
  • Height: 2.7 inches (67.9 mm)
  • Width: 1.7 inches (42.9 mm)
  • Depth: 0.7 inches (17.4 mm)
  • Weight: 2.0 ounces (56 grams)
  • Federal Communications Commission (FCC), Certified Mobile Operator (PTCRB), Conformité Européene (CE), Global Certification Forum (GCF), PCS Type Certification Review Board (PTCRB), MU509C
  • Highly water resistant; designed to be worn in shower or bath
  • Submersible up to 3.33 feet (1 meter) for 30 minutes (IP67)
  • Humidity: Maximum non-condensing humidity 95% RH @ 50°C
  • Restriction of Hazardous Substances (RoHS) compliant
  • Functional at temperatures from -4°F to 158°F (-20°C to 70°C)
  • Storage temperature range: -40° F to 185° F (-40° C to 85° C)

Go Anywhere with Alert1 Protection

Alert1's Kelsi mobile medical alert system does not require a base station or landline phone.

You can bring it anywhere in the U.S. with T-Mobile or AT&T cellular coverage. You do not need to purchase any cellular coverage plans, because we take care of it all for you.

Kelsi allows easy, 2-way communication with its built-in microphone and speaker, so we can get you the help you need in case of an emergency.


How Kelsi Works

Mobile Medical Alert System Benefits

Kelsi Product Features

  • Small and lightweight
  • Similar GPS systems as 911 with nationwide location accuracy
  • 100% shower safe, so it can be worn at all times
  • 30 day battery life between charges (comparable products only last 48-72 hours)

Personalized Response

  • It doesn't matter where you are or what help you need; Alert1 creates a customized response protocol for each member. We can call family, neighbors or 911 quickly
  • Compare medical alert systems and you'll see why Alert1 is different. We stay on the line with you until we are 100% sure help arrives. You are never alone if you choose Alert1

Easy Setup

  • After a quick charge it will be ready for you to use

Nationwide Monitoring

  • Alert1 features two fully independent US-based Command Centers. Our CSAA certified operators are trained to help you in any emergency situation. They will answer your call and stay on the line with you until help arrives
  • Your device comes with an unlimited amount of button pushes and talk time, so you can press the help button any time you are in need
  • Alert1 Command Centers are US-based and available 24/7. Our operators speak 190 different languages

Protection In and Around the Home

  • The system works on the T-Mobile or AT&T cellular networks 24 hours a day so you can take it with you anywhere and still be protected
  • You don't need to buy an additional cellular coverage plan. We take care of it for you

Call us today at    1-866-581-4540 to get on the go protection with Alert1

How Does the Mobile Medical Alert System Work?

Put the system in your pocket or around your neck at home or when you are heading out. If you need help at any time, day or night, simply press the help button. You will be connected via cellular network to a US based emergency operator at our Command Centers. They will ask if you need help and contact a family member, friend or 911 to get you help fast.

30 Day Money Back Refund on Annual Plans

If within the first 30 days of your service you have tested your Alert1 medical alert system, connected to our Command Center and decided you are not happy with it, you can take advantage of our 30-Day Money Back Guarantee*!
     1. Cancel anytime - no hassle!
     2. No cancellation fees
     3. Refund 100% of your service plan payment

*To qualify for a refund, new members must 1) test the medical alert device and connect to the Command Center within 30 days of service 2) subscribe to an annual plan and 3) return the device in its original condition within 30 days from the date that you received it. One-time orders, devices that did not connect to the Command Center and devices returned after 30 days will not qualify for a refund. You will be responsible for returning your device in good working condition. If applied, new shipping costs, activation fees and warranties are non-refundable.

Start Your Risk Free Trial Today!    1-866-581-4540
Start Your Risk Free Trial Today!    1-866-581-4540

What If I Don’t Know Where I Am?

Don't worry, the system was designed specifically to help in these situations. The operator at our Command Center will open a direct connection with 911 and use their precise cellular technology to locate you within 2 meters. We will then communicate the location to your responders so they can get you help. If your responders aren't near, we will contact the local 911 near your location. Then, we will stay on the line with you until we are sure your help has arrived.

Alert1 Reviews

"My mom fell the other day. No one was scheduled to check on her and her phone had fallen away from her. My brother and I were alerted to the situation. She was on the floor less than 15 minutes. This is a great system. I am so glad we did this for her."





Add a review

Emergency crew arrived shortly
Marilyn (AZ)
Emergency crew arrived short;y after my son and they took me to the hospital. I was treated correctly and allowed to go home last night. Thank you.
Posted on 10/3/2014
I'm always pleased with the response
Susan (AL)
I'm always pleased with the informative replies I get when I call, or have a question. Very satisfied with your company
Posted on 10/3/2014
Best fit for my needs
Bill (TX)
Best fit for my needs and the rates are reasonable.
Posted on 10/3/2014
Excellent service!
Csaba (GA)
Excellent service and courteous. Easy installation. 5 min max and it is ready for duty. Thank you Alert 1 for giving me a peace of mind when I can't be with my parents.
Posted on 10/3/2014
We recommend Alert1 to all friends and family
Alan (FL)
I just wanted to add a short note to express our thanks for your service. This unit saved my mother's life at least 3 times during the 6 years she had it, and my wife and I both think that this is a pretty good record of performance.
We have been glad to recommend your company to all of our friends and family.
Again, thank you and best wishes for the future.

Posted on 10/3/2014
All works well
Karena (FL)
Totally pleased with the purchase and shipping process. We love the device and are happy that we got it.
Posted on 9/25/2014
We appreciate the service
FlauraLee (AZ)
I appreciate the calls to check the operation of the system. Let's us know we are not forgotten. Thanks.
Posted on 9/25/2014
We have been happy
Donna (OH)
We have been very happy with Alert 1 for the 2 months we have had it for our mother.
Posted on 9/25/2014
It's all good
Ellen (SC)
We got the alert1 for a woman in our church. She said all is good.
Posted on 9/25/2014
My mother is very pleased
Karen (VT)
My Mother is very pleased with Alert1. She has had a few false alarms and Alert1 was on top of the problem immediately. Thank you
Posted on 9/25/2014