Table 2. Sensor and working.

Name of sensors	Working mechanism
Climate sensor	A device with advance second-generation Bluetooth 5 technology. The range about 200 m wireless, easy installation with smart hang swing mechanism, waterproof, 30 days log-maintained system. It collects data every 10 to 30 min. A total of 2 aa batteries.
Pulse device by kick-starter	Modulator: smart device which gets sensors online. We use the sensor by the pulse at any time by simply declare some rule.
Master sensor	All the sensors, collectively form a broad network through connections modules. This master sensor is working as a gateway by gathering all the sensor's data and generation rate, and then giving this data to the network by cellular connectivity (Benyezza et al., 2023). The master sensor is of two types: direct-cellular connection, internet through master sensor (Oguntosin et al., 2023). Direct-cellular connection: this type of sensor use sim connectivity to form a gateway (Salama et al., 2023). Internet through master sensor: the functionality is same as a master direct sensor but the node sensor does not give data directly to the internet, it acts as a module for a master sensor to work its gateway. Cluster: cluster of node sensors are combined on the backbone of a master sensor. the clustering can also increase the range of one greenhouse or combined two to three farms.
Leaf wetness sensor	It is based on electrical resistance this sensor measures the wetness of the leaf.