The HED026 Deluxe Rear-wear headset has a 3.5 mm (1/8 inch) mono plug for use with mono or FM Receivers.  This headset also works with Williams Sound's Pocketalker Pro personal hearing amplifier.

Ring Video Doorbells lets you see and speak with visitors at your door, from anywhere. Each doorbell is equipped with an HD camera with night vision and smart motion detection.