10+
Downloads
Content rating
Everyone
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About this app

The SENTRY™ LINK-IT 2 and 4 is a cost effective but versatile IoT (Internet of Things) solution for various remote automation projects. Multiple users WEB and APP controlled. SMS control is available as well. It provides one digital Input (configurable by polarity of triggering) and one relay Output (active state settable to Low or High plus NO and NC free potential contacts). here is an option to logically “link” the input to the output i.e. the certain state of the input automatically sets a predefined state of the output.
Updated on
Jul 10, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Personal info
Data is encrypted in transit
You can request that data be deleted

App support

Phone number
+27716809898
About the developer
MARTIN ELECTRONICS CC
developer@martin-electronics.co.za
26 KINDON RD JOHANNESBURG 2019 South Africa
+27 71 680 9898