The catch
Arlo Home Security System with 2 Sensors
Sensor modes run on shared physical devices, and some combinations are documented as incompatible.
Side by side
Arlo Home Security System SS1201 vs eufy Alarm 5-Piece Compared: Arlo’s hub has to sit where it works for keypad access and for motion sensing
Quick verdict
Arlo SS1201 is the pick when configurable door, motion or water sensing is useful and you will plan each sensor’s physical location with care. For two entry sensors, a separately placed motion detector and free core app alerts, go with eufy Alarm 5-Piece. Arlo’s keypad hub also detects motion, but where you put it has to suit both control and sensing. Smoke and CO listening on Arlo requires an eligible paid plan after the trial.
Before you buy
Why, and what it costs you
Where the keypad goes can make an extra motion sensor necessary
Because Arlo's hub includes motion sensing, counting only the two separate sensors when planning detection is a mistake. Still, a keypad placed where people can reach it may lack the sight line the desired room needs.
Where this comes from
A motion sensor is built into the Arlo hub. The two external All-in-One Sensors are still separate devices, and eufy includes an independent motion detector and keypad.
The catch
eufy Security 5-Piece Home Alarm Kit
The selected kit lacks both a water-leak and an alarm-listening sensor.
Arlo Home Security System with 2 Sensors
- Why pick it
- Set up a sensor for a water-leak spot instead of buying a dedicated leak sensor
- Put the keypad hub’s sensing role to use where its required placement works
- The catch
- Sensor modes run on shared physical devices, and some combinations are documented as incompatible.
eufy Security 5-Piece Home Alarm Kit
- Why pick it
- Keep the keypad and the dedicated motion detector in separate locations
- Two entry sensors and free core app alerts are enough to begin
- The catch
- The selected kit lacks both a water-leak and an alarm-listening sensor.
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What this page compares
Arlo SS1201 and eufy T8990 differ on door and leak sensing, keypad placement, separate motion coverage and paid listening features.
Arlo SS1201 is the pick when configurable door, motion or water sensing is useful and you will plan each sensor’s physical location with care. For two entry sensors, a separately placed motion detector and free core app alerts, go with eufy Alarm 5-Piece. Arlo’s keypad hub also detects motion, but where you put it has to suit both control and sensing. Smoke and CO listening on Arlo requires an eligible paid plan after the trial.
Which one fits
Pick the situations that sound like you
Keypad and motion detector kept in different rooms
eufy comes with separate devices. With Arlo, an All-in-One Sensor may have to be reassigned, or an additional sensor added.
- Arlo Home Security System with 2 Sensors
- Caution
- eufy Security 5-Piece Home Alarm Kit
- Better fit
Reserve one included sensor for a leak spot
Water sensing is supported by Arlo's All-in-One Sensor. There is no leak sensor in the eufy kit.
- Arlo Home Security System with 2 Sensors
- Better fit
- eufy Security 5-Piece Home Alarm Kit
- Not suitable
Have one sensor handle both an under-sink leak and a door opening
The physical locations differ, and Arlo prohibits that mode combination.
- Arlo Home Security System with 2 Sensors
- Not suitable
- eufy Security 5-Piece Home Alarm Kit
- Not suitable
Smoke or CO listening with no paid plan once the trial ends
Arlo needs an eligible plan, while the listening hardware is missing from eufy's kit.
- Arlo Home Security System with 2 Sensors
- Not suitable
- eufy Security 5-Piece Home Alarm Kit
- Not suitable
In practice
Differences you will notice
Where the keypad goes can make an extra motion sensor necessary
Because Arlo's hub includes motion sensing, counting only the two separate sensors when planning detection is a mistake. Still, a keypad placed where people can reach it may lack the sight line the desired room needs.
How we worked this out
A motion sensor is built into the Arlo hub. The two external All-in-One Sensors are still separate devices, and eufy includes an independent motion detector and keypad.
A sink leak and a door cannot share a sensor’s location
An All-in-One Sensor on Arlo can be assigned to a leak location, which helps when that matters more than monitoring a second opening. A sensor cannot be in two places at once, and Arlo explicitly prevents Water Leak and Open/Close modes on the same sensor.
How we worked this out
The Water Leak/Open-Close exclusion and the horizontal placement that water sensing needs are both documented by Arlo. In eufy's exact kit you get entry and motion sensors and no leak sensor.
Alarm listening takes an alarm and the right plan
Arlo's smoke and CO features listen for compatible alarms. They do not replace the alarms themselves. After the trial, the documented listening function requires an eligible paid plan.
How we worked this out
Smoke Alarm Listening and CO Alarm Listening are described by Arlo, along with a subscription requirement after the trial. Nothing here implies life-safety alarm replacement or guaranteed detection.
Option A
Arlo, SS1201-100NAS
Home Security System with 2 Sensors
Two configurable sensors in Arlo’s compact package can detect opening, motion, water, light, temperature and alarm sounds.
- Best for
- Set up a sensor for a water-leak spot instead of buying a dedicated leak sensor
Facts we checked
- Separate sensors in the exact kit are two All-in-One Sensors
- Keypad location and motion come from a Keypad Sensor Hub that also contains a motion sensor
- Water sensing is available by configuring the All-in-One Sensor for water leaks
- Smoke and CO listening needs an eligible paid plan after the trial
Option B
eufy Security, T8990121
5-Piece Home Alarm Kit
This simple HomeBase alarm package sends app alerts and does not force you into a monthly monitoring plan.
- Best for
- Keep the keypad and the dedicated motion detector in separate locations
Facts we checked
- Separate sensors in the exact kit are two entry sensors and one motion sensor
- Keypad location and motion come from a separate keypad and motion detector
- Water sensing: the selected kit has no water sensor
- Smoke and CO listening: the selected kit has no alarm-listening sensor
Spec by spec
Where they really differ
| Spec | Arlo Home Security System with 2 Sensors | eufy Security 5-Piece Home Alarm Kit | In practice |
|---|---|---|---|
| Separate sensors in the exact kit | Two All-in-One Sensors | Two entry sensors and one motion sensor | Keep the count of physical sensor placements apart from detection modes. |
| Keypad location and motion | Keypad Sensor Hub also contains a motion sensor | Separate keypad and motion detector | eufy can put those two functions in different locations and does not need an entry sensor reallocated. |
| Water sensing | All-in-One Sensor can be configured for water leaks | No water sensor in the selected kit | Water Leak and Open/Close modes cannot be used at the same time on Arlo's sensor. |
| Smoke and CO listening | Eligible paid plan required after trial | No alarm-listening sensor in the selected kit | Required smoke or CO alarms are not replaced by either kit. |
| Core app alerts | Check exact sensing function and active plan | No required monthly fee for core app alerts | Do not confuse Arlo's premium listening requirements with ordinary sensor capability. |
Trade-offs
What each pick costs you
With Arlo Home Security System with 2 Sensors
- After the trial, alarm listening requires an eligible paid plan.
With eufy Security 5-Piece Home Alarm Kit
- Even free core alerts need a working network and a phone that can be reached.
Change of plan
When the answer changes
A leak location can get one of the included sensors
Go with Arlo Home Security System with 2 Sensors. The documented water-sensing mode is supported by Arlo's All-in-One Sensor.
Contacts are needed on two openings, and the motion sensor has to be separate from the keypad
Go with eufy Security 5-Piece Home Alarm Kit. eufy comes with two entry sensors and a motion detector that is positioned independently.
Decision guide
How to decide
Arlo SS1201 fits when you value configurable door, motion or water sensing and are ready to plan every sensor’s physical location carefully.
Where the keypad goes can make an extra motion sensor necessary
Arlo’s hub includes motion sensing, so counting only the two separate sensors when you plan detection would be a mistake. Still, a keypad placed where people can reach it may lack the sight line the desired room needs. eufy’s separate motion detector can be positioned independently of its keypad. Pick eufy when those locations must differ and both entry sensors are already assigned. Pick Arlo when the hub position works or an All-in-One Sensor can be reassigned.
A sink leak and a door cannot share a sensor’s location
An Arlo All-in-One Sensor can be assigned to a leak location, which helps when that matters more than monitoring a second opening. It cannot be in two places at once, and Arlo explicitly blocks Water Leak and Open/Close modes on the same sensor. Pick Arlo if one of its two sensors can be dedicated to that leak spot. Pick eufy for the two-entry-plus-motion brief, and treat leak detection as a separate compatible purchase and not an included function.
Alarm listening takes an alarm and the right plan
Arlo’s smoke and CO features listen for compatible alarms and do not replace the alarms themselves. After the trial, the documented listening function needs an eligible paid plan. The selected eufy alarm kit has no listening sensor. Decide only once you have confirmed the existing alarms, placement and service conditions.
What this page can’t tell you
- Nobody tested false alarms, response time or detection. On eufy, optional paid monitoring depends on compatible hardware and an eligible location.
By the numbers
What the data shows
What we found across the home security systems we compare, plus the checked facts behind each finding.
Show the facts and the math
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| Arlo Home Security System with 2 Sensors |
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| eufy Security 5-Piece Home Alarm Kit |
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Ready to buy
See today’s price and what owners say
Open either model on Amazon for the current price, customer reviews and delivery options.
Arlo Home Security System with 2 Sensors
Set up a sensor for a water-leak spot instead of buying a dedicated leak sensor
See price & reviews on Amazoneufy Security 5-Piece Home Alarm Kit
Keep the keypad and the dedicated motion detector in separate locations
See price & reviews on AmazonEach link opens in a new tab.
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