Device in Homebridge cycles on and off
## Verify the following before opening an trouble issue

**Go over all the following points, and put an `x` in all the boxes that apply.
If you're unsure about any of these, don't hesitate to ask. We're here to help!**

-  [ x] That _OAuth_ is Enabled for the SmartApp under the IDE.
-  [x ] The SmartApp and Device Handler are using the latest code available.
-  [ x] That Both the SmartApps and Device Handlers have been _Published for You_ in the IDE.

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## About Your Setup
-  How many devices are detected?:67
-  Mobile App Version(Not required):
-  SmartApp Version: 2.3.3
-  Device Handler Version: na
-  Homebridge Version: hoobs 3.2.6
-  NodeJS Version: 12.13.0

## Expected Behavior
When a smartthings switch that is correctly added into homebridge and there is a homekit automation that when it is turned on/off it turns something else on/off as planned.

## Current Behavior
The smartthings devices cycles on/off in homekit.

## Steps to Reproduce (for bugs)
**Provide a link to a live example, or an unambiguous set of steps to reproduce this bug. Include code to reproduce, if relevant**

1.  Put smartthings device in homebridge
2.  Create automation in homkit for if smartthings devices turns on, turn on other homebridge device
3.  switch smartthings device
4. watch the device turn on/off and on/off repeatedly

## Context
**How has this issue affected you? What are you trying to accomplish?
**Providing context helps us come up with a solution that is most useful in the real world**

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Please include a copy of any relevant log output to assist in tracking down the bug
