What Is: The Four Corner Test

The 4 Corner Test is a simple way to make sure that your Angelcare Movement Sensor Pad is at the correct sensitivity level for your baby's mattress.

To explain, Angelcare Movement Monitors monitor your baby’s actual movements/vibrations on the surface of their mattress- however tiny.

Step 1: checking the alarm:

The first step applies if you are unsure whether your monitor is alarming or not. Skip to Step 3 if you know for certain that your alarm is working.

Set the sensitivity of your monitor to the lowest setting (starting at 1). Make sure the Sensor Pad is placed in the middle (centre) of baby's sleeping area, mattress - regardless of where your baby sleeps, lies. Switch on all units (Nursery/Camera and Parent) and step away from the cot. After 20 seconds a continuous alarm should sound to indicate that no movement has been detected.

If the alarm does not sound, check that everything is setup correctly and try again; check battery levels on all units, follow the manual etc.

If the alarm does not sound, check for external movements in the room, cot where the Sensor Pad is setup. Whilst the Sensor Pad can detect movement – it cannot distinguish if the movement is from external vibrations such as below or baby:

• A large load driving past causing vibration.
  • trains, planes, cars etc
• Movement from inside the nursery/sleeping/mattress area
  • fans during hot weather, mobile above and / or attached to baby's cot.
  • Under floor, central heating.
  • Wind up or battery-operated toy that plays music etc. in or attached to the cot
• People walking past/through where the monitor/Sensor Pad is setup.
  • even more so in homes with wooden floors
• Sleeping next to / touching the Moses Basket/Travel Cot/bedside crib.
  • movement from adult in bed can be registered by the Sensor Pad, even when asleep if there is any contact with the basket / cot - however small

If the alarm sounds but does not stop when carrying out the test, raise the sensitivity by 1 level only and repeat until the alarm does not sound.

If you are at the highest level and the alarm continues, is the Sensor Pad cordless?

Yes: the battery in the Sensor Pad requires replacing approx. every 4 months to prevent alarms and / or loss of signal between the pad and Nursery / Camera Unit.

Also, some batteries can have a short shelf life if they have been in storage at home or with the retailer - this is the same for all types / brands of battery.

Whilst we do not stock / sell the Sensor Pad cell batteries, these are available from high Street stores and online. Please purchase / replace the battery.

Should the alarm continue - check for mattress compatibility:

https://angelcareuk.zendesk.com/hc/en-gb/articles/1500002768282-Is-my-Angelcare-baby-monitor-suitable-to-use-with-my-baby-s-mattress- 

If this still continues complete the contact us form for support from our team:

https://angelcareuk.zendesk.com/hc/en-us/requests/new     

Step 2: setting up for baby:

When we know the alarm is working, set the sensitivity level on your monitor (through the Parent Unit) to the mid-way point. This can be level 2 or 3 depending upon your model.

Remember, refer to your product manual if you're unsure on how to adjust this setting.

Step 3: the four-corner test:

• Place (or check that) the Movement Sensor Pad is in the middle (centre) of baby's sleeping area - wherever baby lies/moves too/is placed in the cot.
• Switch the Nursery/Camera & Parent Unit ON.
• Gently place your hand in the furthest corner of the mattress & and wait for 20 seconds.
  • If the movement alarm does not sound after 20 seconds do continue with the following and repeat in the remaining corners
• Remove your hand from the mattress and step away from the cot
  • The Movement Sensor Pad is sensitive enough to detect your movement if you are touching the cot.
• After 20 seconds a series of continuous beeps (The Main Alarm) will sound from the Nursery/Camera Unit & Parent Unit.

Just a note - with some models you may hear one beep after 15 seconds - this is normal and known as the Rouse Alarm, designed to make baby stir if inactive for 15 seconds before the main alarm sounds at 20 seconds

• Place your hand on the mattress and after a few seconds the alarm will cease as the Sensor Pad will have detected your movement
  • If the alarm sounds when you place your hand for 20 seconds in any of the corners adjust the sensitivity by turning it up a single level and repeat the 4 Corner Test.
  • If the alarm does not sound when you step away from the cot reduce the sensitivity down a single level and repeat the 4 Corner Test. Keep adjusting the level until the alarm sounds ensuring that movement is still detected in all four corners.

Try the new setting over the next couple of nights and remember, when movement is not detected the monitor will alarm, when movement is detected, the monitor will not alarm.