The door sensor can be set up to either use the contact sensor (magnet) or for roll-up or garage doors, without it.
Contact Sensor Setup
To use the door with the contact sensor, simply mount the sensor and contact piece facing each other such that the two notches are lined up. Using the included double stick tape is generally the easiest mounting options indoors.The sensor can be used outdoors if it is protected from rain. There is an upcoming mount that enables mounting with screws, and a weather cover to enable use in rain.
IMPORTANT: The contact piece must be within .75 inches of the sensor to properly detect when the door is closed.
Roll up Door Setup
The Rhombus D1 door sensor has a built in accelerometer so that it can be used easily with roll up doors. For this setup, simply place the sensor on the roll up door with the notch facing down towards the ground when the door is closed, but facing sideways or at an angle when the door is open. That's all there is to the installation!