SONOFF Zigbee Human Presence Sensor is the top pick among smart presence sensors under $40, rated 4.0 stars across 394 customer reviews.
SonoffZigbee Human Presence Sensor
4.0(394)$26.99
GoveeSmart Presence Sensor
3.9(260)$39.99
SwitchBotPresence Sensor
3.5(476)15% OFF$29.99$25.49
MerossSmart Presence Sensor
3.9(113)$33.99
SonoffSenseGuard Presence Core
3.7(135)$24.90
MerossPresence Sensor MS605
3.0(82)6% OFF$27.59$25.99
MoesHuman Presence Sensor
3.7(21)5% OFF$39.99$37.99
Third RealitySmart Presence Sensor R2
3.0(11)$39.99- Price alerts
Presence Sensors under $40, updated as prices fall
We check the price of every Presence Sensor in the catalog daily, and email you the ones that drop into this range.
Apollo AutomationMSR-2
$35.69
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Frequently asked questions
What are the best smart presence sensors under $40?
SONOFF Zigbee Human Presence Sensor, GoveeLife Smart Presence Sensor and SwitchBot Presence Sensor lead our ranking of smart presence sensors under $40, ordered by customer rating weighted by how many reviews back it. The full list compares 9 products in this price range.
How many smart presence sensors cost less than $40?
This page tracks 9 smart presence sensors under $40 from 7 brands, with prices starting at $24.90.
Are these prices up to date?
Prices come from each product's Amazon listing and are re-checked continuously, so every card shows the latest price we have. A product whose price rises above $40 drops off this list on the next update.
Looking for more than $40?
See all the presence sensors in the catalog, compared side by side on specs, price and rating.