eufy Entry Sensor E20 | Brand New
$44.00
Sale price
$44.00
Regular price
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eufy Entry Sensor E20 | Brand New
$44.00
Sale price
$44.00
Regular price
eufy Security
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Entry Sensor E20
The door and window sensor that actually tells you what's going on. Magnetic detection, 5-year battery, and zero monthly fees. Set it and genuinely forget it.
5yr
Battery Life
200m
Wireless Range
$0
Monthly Fees
Model: T90E0121
The Honest Rundown
No spin, no fluff. Here's what you need to know.
Tri-axis magnetic detection
Dual-side design means it knows the difference between open and closed, no matter how you mount it.
Battery lasts years, not months
CR123A comes pre-installed. eufy rates it for up to 5 years, which is wild for something this small.
Tamper alerts are legit
If someone tries to pry it off, you'll know about it immediately. No silent removal here.
Needs a HomeBase
It won't work standalone. You'll need a eufy HomeBase (Mini, 2, 3, or Pro) to run the show.
Indoor only
Rated 0-50°C and not weatherproofed. Keep it inside on doors, windows, and cabinets.
Bypass button is handy
Quick 2-second press gives you 120 seconds of temporary disarm. Perfect for letting the dog out.
Magnetic Detection
Tri-axis sensing.
Tri-axis sensing.
Basically impossible to trick.
The E20 uses dual-side tri-axis magnetic detection to monitor door and window states with precision. It knows when something opens, closes, or gets tampered with -- and it tells you instantly. Max sensor gap of 3.81cm means flexible mounting options too.
🧲 1.5in / 3.81cm max detection gap
Battery Life
5 years.
5 years.
Not a typo.
The CR123A battery comes pre-installed and lasts up to 5 years. That's roughly 1,825 days of monitoring before you even need to think about it. When it does eventually run low, the app will let you know well in advance.
🔋 CR123A pre-installed & ready to go
Tamper Protection
Touch it.
Touch it.
We dare you.
Built-in tamper detection means if anyone tries to remove or interfere with the sensor, you get an instant alert. It's a small detail that makes a big difference when you're serious about securing your home.
🛡️ Instant tamper alerts via the eufy appMore to Love
The little things that make the E20 worth it.
200m Wireless Range
Sub-1G wireless tech means it can talk to your HomeBase from up to 200 metres away. Solid coverage for most homes.
Bypass Button
2-second press gives you a 120-second temporary disarm. Handy for when you need a quick open without triggering the alarm.
Instant Notifications
Get real-time alerts on your phone the moment a door or window opens. No delay, no subscription required.
eufy Ecosystem
Works seamlessly with HomeBase Mini, 2, 3, and Pro. Part of a bigger system if you want to expand later.
Easy Install
3M adhesive or screw mount -- your choice. Bracket included. Most people have it up and running in under 5 minutes.
Compact Design
At just 73 x 24.6 x 21.6mm, the sensor is small enough to blend into any door or window frame without being an eyesore.
Tech Specs
For the detail-oriented among us.
Model T90E0121
Type Door/Window Contact Sensor
Sensor Dimensions 73 × 24.6 × 21.6mm
Magnet Dimensions 73 × 14 × 21.6mm
Detection Tri-axis Dual-side Magnetic
Max Sensor Gap 1.5in / 3.81cm
Battery CR123A (pre-installed)
Battery Life Up to 5 years
Wireless Sub-1G, 656ft / 200m range
Operating Temp 0–50°C
Use Indoor Only
Compatibility HomeBase Mini / 2 / 3 / Pro
With Entry Sensors vs. Without
😬 Without Entry Sensors
- ❌ No idea if a door or window was opened while you're out
- ❌ Cameras only catch what's in frame -- blind spots are real
- ❌ Intruders can enter through windows cameras don't cover
- ❌ Kids sneak out and you don't find out until breakfast
- ❌ No perimeter layer in your security setup
😎 With Entry Sensor E20
- ✅ Instant phone alert the moment any entry point opens
- ✅ Covers doors and windows that cameras can't reach
- ✅ Tamper alerts if anyone tries to remove the sensor
- ✅ Bypass button for quick temporary disarm when needed
- ✅ True perimeter security working alongside your cameras
What's in the Box
Everything you need. Nothing you don't.
Entry Sensor
(with battery)
(with battery)
Magnet
3M Adhesive
Mounting
Bracket
Bracket
Screws
Quick Start
Guide
Guide
Why CamGuard?
We're an Aussie team that actually uses this stuff.
Australian Owned
Based in Townsville, QLD. We're not a faceless warehouse -- we're real people who test every product we sell.
Actual Humans Answer
Got a question? You'll get a real person, not a chatbot. We're happy to help you figure out the right setup.
Trusted by Thousands
Aussie families trust CamGuard for their home security. We're in it for the long haul, not just the sale.
Shipping & Pickup
Free Express shipping included on every order. We ship within 1 business day via Australia Post Express.
QLD Metro
1–2 business days
NSW / VIC / ACT
2–3 business days
SA / TAS
3–4 business days
WA / NT
4–6 business days
Townsville local? Free pickup available from our Townsville location. Just select pickup at checkout and we'll have it ready for you.
We've Got You Covered
Peace of mind, sorted.
12-Month Warranty
Every product from CamGuard comes with a full 12-month warranty. If something goes wrong, we'll sort it out. No runaround.
30-Day Returns
Changed your mind? No dramas. Send it back within 30 days for a hassle-free return. We make it easy.
Ongoing Support
Setup questions, troubleshooting, compatibility checks -- reach out anytime and we'll help you get sorted.