Calder Link | The smart safety alarm that pairs with your phone
Why two? The second you walk into a listing, your bag goes down on the counter. One Calder Link stays clipped to you, the other stays on your bag, so there’s always one within reach.
Free delivery. Delivered by Friday, Oct 30
What it is
A smart personal safety alarm. Pull the pin or double-press SOS and it sounds a 130dB siren and flashes a light. It also pairs with your phone, so your phone always shows where it is.
What's in the box
Calder Link: 1 alarm. Calder Link Duo: 2 alarms, one for you and one for your bag. Brokerage Pack: 5 alarms for your office or team. Every Calder Link charges by USB-C.
How it pairs
Hold the side button for 3 seconds, then add it in the finder app on your phone: Find My on iPhone, Find Hub on Android. From then on your phone shows where it is, can make it sound, and warns you if you leave it behind.
How to use it
Clip it to the keys in your hand. Set it off once in your driveway the day it arrives so you know the sound. On iPhone, share it with your broker or partner so they can see where it is too.
90-Day Money-Back Guarantee
Email us within 90 days of delivery and we'll walk you through the return. Opened and used is fine. Your refund goes back to your original payment method once the return arrives.
The Calder Promise
- 90-day money-back guarantee
- 130dB siren plus flashing light
- Pairs with iPhone and Android
- No subscription
- Rechargeable, 150+ day standby
- Four finishes
Built around the way agents actually work
In agents' own words, from r/realtors
You're not the only one who feels this.
I was literally up the night before thinking about safety scenarios.
I often do them by myself and I have had more then one scenario where I wish I had someone with me.
When there are only seconds, the police are minutes away.
The 90-Day Calder Guarantee
Pair it, test it, then carry it to your open houses for 90 days.
- Pair it and set it off in your driveway
- Carry it to your open houses
- Not for you? Email us within 90 days
Email us within 90 days of delivery and we'll walk you through the return. Opened and used is fine. Your refund goes back to your original payment method once the return arrives.
Most safety gear asks you to trust it on the worst day of your life. You never find out if it works until it has to.
Calder Link you can test on day one: set it off in your driveway and make it sound from your phone. If it isn’t for you, send it back within 90 days for your money back.
90 days from delivery. Opened and used is fine.
Refund to your original payment method
Heard in the room. Seen on the map.
For open houses nobody can sit in on
It rides on the keys in your hand, from the car to lock-up.
Pairs with your phone
Your phone shows where it is, can make it sound, and warns you if you leave it behind.
For the people you can't screen
The walk-in off the street. The guy still upstairs at 3:58. No number to look up.
Test it the day it comes
Set it off in your driveway. If it doesn't make you jump, send it back. You have 90 days.
Why not just bring someone?
Bringing someone works because someone else can see and hear. But husbands get called in, lenders cancel, and the setup hour happens before anyone arrives. Calder brings the noise, the light and the map with you, every time.
Try Calder for 90 Days90-day money-back guarantee on every set
Your phone calls for help
Help is minutes away. Calder makes noise in the room the second you need it.
Your screening app checks numbers
It can't check a walk-in. Calder doesn't need to know who they are.
Your bag is across the room
Anything in your tote is too far. Calder rides on the keys in your hand.
Your office can't see you
On iPhone, share your Calder Link with your broker or partner. They see where it is until you stop sharing.
Set up with the door wide open
What Sundays can feel like when you're never alone and unheard in there.
The setup hourDoor propped, snacks out
You carry the boxes in with the door propped and your keys in your hand. You don't look over your shoulder.
The man in the doorwayHe asks if you're alone
You don't need to lie about a colleague who isn't coming. You point him to the sign-in sheet.
The vacant listingYou say yes this time
The listing across town you'd have passed to someone else. You take it, and you keep the leads.
Saturday nightYou actually sleep
No running scenarios at 2am. And whoever used to give up Sundays to sit in gets them back.
Small enough to carry every time
Everything it does, nothing it doesn't
130dB siren
Flashing light
Pairs with your phone
150+ day standby
What to expect
Day 1
- Pair it with your phone in under a minute.
- Set it off in your driveway so you know the sound.
- Clip it to the keys you carry.
Your first open house
- Keys in your hand from the car to the front door.
- Share it with your office before you head out.
- Set up with the door propped like always.
Month 1
- It's part of the routine, like the sign-in sheet.
- Keep screening, sharing your location, and co-hosting.
- This covers the seconds in between.
Day 90
- Your guarantee window closes.
- Not for you? Email us before then.
- We'll walk you through the return.
The open house problem
Nobody can see or hear you
At an open house the door is unlocked by design and anyone can walk in. The scariest question isn't about the house. It's "Are you here alone?"
- Most open houses are fine
- The worry is the one that isn't
- You can't bring someone every time
A witness in your hand, a pin on the map
A 130dB siren and a flashing light on the keys in your hand. It pairs with your phone, so your phone always shows where it is, and on iPhone your office can see it too.
- 130dB siren plus flashing light
- Pairs with iPhone and Android
- No subscription
Test it before you need it
86% of agents in NAR's 2024 member safety survey said they had shown properties alone. That's why this is built to be carried every time, and why you can test it on day one.
- Pair it and test it on day one
- Take it to your open houses
- 90 days to decide
It was never about being brave. It's whether anyone can hear you.
Agents get hurt when the person believes nobody can see or hear. That's why the scariest question at an open house is "Are you here alone?" and why it only ever feels safe with someone else there.
Why it felt safe with someone there
They didn't have to do anything. Someone who could see and hear was enough.
Why Calder works when you’re alone
You don’t need a second person in the room. You need noise and light the second you need them, and a phone that knows where you are.
Honest comparison
Calder Link
What you use now
90-day money-back guarantee on every set
Questions, answered
Will it stop an attacker?
No alarm can promise that, and we won't. What Calder does is make noise and light right where you are, so you're not alone and unheard. It draws attention and buys you seconds. Keep using your other precautions too.
Does it call 911 or text my contacts?
No. Calder Link makes noise and light, and your phone shows where it is. It doesn't send messages or make calls. On iPhone you can share it with up to five people, like your broker, so they can see where it is.
Does it work with my phone?
Yes. On iPhone it uses the Find My app that's already there. On Android it uses Google's Find Hub app. Pairing takes under a minute, and there's no subscription.
How loud is it?
130dB, per the manufacturer's spec. The real test: set it off in your driveway the day it comes. If it doesn't make you jump, email us within 90 days of delivery and we'll walk you through the return.
What if someone grabs it?
Anyone can grab anything. That's why it's on the keys in your hand and not across the room in your bag. It's one layer, alongside everything else you do.
Why do I need two?
Because your bag doesn’t stay with you. It goes down on the counter the moment you walk into a listing. One Calder Link stays clipped to you, the other stays on your bag, so whichever is closer is the one you reach for.
What's your guarantee?
Email us within 90 days of delivery and we'll walk you through the return. Opened and used is fine. Your refund goes back to your original payment method once the return arrives.