Temperature Sensor
Get the most out of your SimpliSafe system by getting answers to your questions and support for your devices.

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Temperature Sensor Offline
If your Temperature Sensor is showing as offline on the SimpliSafe® Mobile App, this is an indicator that the battery within the device needs to be replaced.
The Temperature Sensor takes one Duracell CR-2032 Lithium 3V battery and has a life expectancy of up to 5 years depending on placement and usage.
To replace the battery, slide the sensor up and off its bracket. Then, replace the lithium battery and slide the sensor back onto its bracket.
Please note that the error may take up to 24 hours to clear from the SimpliSafe® Mobile App after taking these steps. If you want to bypass that timeframe, you’ll need to follow the steps below to remove the Temperature Sensor from your system and then re-add it.
To remove your Temperature Sensor:
Open the SimpliSafe® Mobile App on your phone or tablet
Choose My System from the bottom navigation bar
Select Device Settings
Tap on the sensor you wish to remove
Choose ‘Remove Device’
Once you have removed your sensor, you can add it back using our Installation Guide.
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Temperature Sensor
Change Temperature Sensor From Fahrenheit or Celsius
The Temperature Sensor can display Fahrenheit or Celsius through the SimpliSafe® App. The SimpliSafe® App will display Fahrenheit or Celsius based on the settings of your phone. If you wish for the SimpliSafe® App to display a different temperature type, you’ll need to update your phone’s system settings and re-open the SimpliSafe® App to have it register the new temperature reading.
Changing the Temperature Type for iOS (iPhone/iPad):
On your phone, navigate to System Settings
Select General
Tap on Language & Region
Select Temperature
Adjust this to Fahrenheit or Celsius, as needed
Force close the SimpliSafe® App after making this change
Reopen the app, and the Temperature Sensor should display the new temperature type
Changing the Temperature Type for Android:
On your phone, navigate to Settings
Select Language
Choose Regional Preferences
Tap on Temperature and adjust this to Fahrenheit or Celsius, as needed
Save your selection
Force close the SimpliSafe® App after making this change
Reopen the app, and the Temperature Sensor should display the new temperature type
*Note, settings may vary between Android devices. Consult with your phone’s manual for further instructions.
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Temperature Sensor
Enabling Secret Alerts for your SimpliSafe® Sensors
What are Secret Alerts?
Secret Alerts* are private notifications sent to you by specific sensors you designate to be on a special “alert-only” setting. Sensors on this setting won’t trigger a system alarm or chime to the Base Station, but send a discreet notification directly to you instead. All of your SimpliSafe® cameras will also film a short recording so you have footage of what tripped the sensor.
Requirements
A supported residential or business monitoring subscription:
Pro Plus
Pro
Core
Self-Monitoring with Camera Recordings
At least one of the following SimpliSafe® Sensors
Entry Sensor
Motion Sensor (Gen 1 or Gen 2)
Glassbreak Sensor
How do I Enable Secret Alerts?
Open the SimpliSafe® Mobile App on your phone or tablet
Choose My System from the bottom navigation bar
Select Device Settings, then tap on your Entry Sensor from the list of available products
Tap into Off, Home, or Away
Select Secret Alert
Choose SAVE in the upper right corner to save your selections before exiting
Repeat for each mode or sensor, as necessary
To ensure that you are notified whenever a sensor triggers a Secret Alert, make sure that you have push notifications enabled.
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Sensors
How to Rename a SimpliSafe® Device
There may be a point where you need to rename a device for your SimpliSafe® System. Renaming it can be done easily through the SimpliSafe® Mobile App, but you can also rename a product using your Keypad. The following will walk you through these steps for each platform so you can pick whichever one is easiest for you.
SimpliSafe® Mobile App:
Open the SimpliSafe® Mobile App on your phone or tablet
Select My System from the navigation bar at the bottom of the app screen
Choose Device Settings
Choose the device you would like to modify
Tap arrow next to the name of your sensor
Choose a prepopulated name from the list of available names, or scroll down and choose Custom Name to enter your own name
Be sure to tap on SAVE in the upper right corner to save your selections
*Note, Custom Names for the Entry Sensor are not supported by Sensor Name Announcement
SimpliSafe® Account Online
Login to your SimpliSafe® Online Account using the browser of your choice
Choose Devices from the left-hand navigation menu
Click on the product you wish to edit, then a pop-up will appear to the right of your browser
Select the pencil icon next to your devices name
Enter the new name you wish to use in the field
Select the check mark when done
Be sure to click on Save Changes from the bottom of the pop-up before exiting to save your selection
*Note, Custom Names for the Entry Sensor are not supported by Sensor Name Announcement. To confirm which names are available, please use the SimpliSafe® Mobile App to rename your sensor.
Keypad:
Press Menu
Enter your Master PIN
Choose Devices and then Open to enter the Devices menu
Scroll down to select the product you wish to modify
Press the screen to the right to choose rename
Choose one of the preset names from the list using the rocker, or select Other at the end of the list to enter a Custom Name*
*Note, Custom Names for Entry Sensor are not supported by Sensor Name Announcement.
The Keypad uses ABC mode for typing. In this mode, you'll cycle through the corresponding characters (numbers, symbols, punctuation, letters) using the keys numbered 0-9 on your Keypad.
1 Press
1*
2
3
4
5
6
7
8
9
0
2 Presses
(Space)
a
d
g
j
m
p
t
w
(Space)
3 Presses
!
b
e
h
k
n
q
u
x
4 Presses
"
c
f
i
l
o
r
v
y
5 Presses
#
A
D
G
J
M
s
T
z
6 Presses
$
B
E
H
K
N
P
U
W
7 Presses
%
C
F
I
L
O
Q
V
X
8 Presses
&
R
Y
9 Presses
'
S
Z
10 Presses
(
*For the '1' key, more characters will appear after 10 presses and in this specific order:
) * + , - . / : ; < = > ? @ [ \ ] ^ _ ' { | } ~
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Sensors
Adhering Sensors to Surfaces
Installing SimpliSafe® sensors takes less than a minute! In most cases, sensors can be mounted on walls by using the adhesive strips on the back of each device. However, there are some situations where the sensor may not adhere to the wall effectively, like:
Brick surfaces: the surface can be rough in texture and hard to clean thoroughly
Hot and humid conditions: humidity can weaken the adhesive strips
Cold conditions: a cold wall can cause the adhesive to fail
Dirty surfaces: the adhesives stick best on clean surfaces
For the best results, we suggest making sure that the area you’re adhering the sensor to has been thoroughly cleaned and dried. We recommend wiping the area down with an alcohol-based cleaning product to make sure it’s clear of any dust or dirt.
Once the area is thoroughly dry, simply peel the paper backing off the adhesives and press the sensor firmly to the wall for 30 seconds.

If you have a sensor that has fallen off a wall, be sure to test the sensor to confirm that it is still working properly and was not damaged.
Alternatively, SimpliSafe® sensors can also be screw-mounted using the included mounting bracket. See our How do I Install my Sensors by Screw-Mounting article for more information.
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