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Emerson Sensi thermostat line expanding with two HomeKit compatible models

Environmental control company Emerson has added to its Sensi thermostat line with a new pair of HomeKit-compatible devices.

On Monday, Emerson announced that its new Sensi Touch Wi-Fi Thermostat and an updated version of the classic Sensi Wi-Fi Thermostat are controllable with Apple's home automation suite.

The Sensi Touch Wi-Fi Thermostat has illuminated terminals for increased visibility while wiring and terminals that eliminate the need for a screwdriver during installation. On-device menu options enable users to customize the information on the home screen display and to choose if the device will be illuminated by default.

The updated Sensi Wi-Fi Thermostat doesn't require a common wire (c-wire) for most installations —but Apple HomeKit users require the c-wire installation for Siri voice control.

In addition to the Apple HomeKit integration, both Sensi thermostats are compatible with Amazon Alexa and Wink home automation platforms.

The new Sensi thermostats will be available in "early summer" according to Emerson. The Sensi Wi-Fi Thermostat retails for $129.99, with the Sensi Touch Wi-Fi Thermostat selling for $199.99.

Introduced in 2014, HomeKit allows users to connect to a variety of compatible so-called "internet of things" devices through the iOS Home app in conjunction with each other, as opposed to a series of disconnected interfaces. The addition of Siri control to HomeKit allows for complicated sequences of events to be induced from an iOS device or a Mac running Sierra.