diff --git a/components/sensor/dallas.rst b/components/sensor/dallas.rst
index 312948201..a0fb606cd 100644
--- a/components/sensor/dallas.rst
+++ b/components/sensor/dallas.rst
@@ -20,8 +20,9 @@ and similar 1-Wire temperature sensors.
 To use your :ref:`dallas sensor <dallas-sensor>`, first define a dallas “hub” with a pin and
 id, which you will later use to create the sensors. The 1-Wire bus the
 sensors are connected to should have an external pullup resistor of
-about 4.7KΩ. For this, connect a resistor of *about* 4.7KΩ (values around that like 1KΩ will, if you don't have
-massively long wires, work fine in most cases) between ``3.3V`` and the data pin.
+about 4.7KΩ. For this, connect a resistor of *about* 4.7KΩ between ``3.3V``
+and the data pin. Values ± 1KΩ will, in most cases, work fine as well,
+if you don't have massively long wires.
 
 .. code-block:: yaml
 
@@ -38,7 +39,7 @@ massively long wires, work fine in most cases) between ``3.3V`` and the data pin
 Configuration variables:
 ************************
 
-- **pin** (**Required**, number): The pin the sensor bus is connected to.
+- **pin** (**Required**, number): The pin the sensor bus is connected to. Please note that 1-wire is a bi-directional bus so it requires both input and output from the pin.
 - **update_interval** (*Optional*, :ref:`config-time`): The interval that the sensors should be checked.
   Defaults to 60 seconds.
 - **id** (*Optional*, :ref:`config-id`): Manually specify the ID used for code generation.