Convenient Smart Receiver: The call button system is easy to set up and allows those who need to signal nurses, therapists, spa staff, etc. remotely when you need help. Multiple Alarm Options & Bright Alarm Light: 1. Sound + Light. Sound Only. Light Only - Bright LED warning light is perfect for the hearing impaired - System range up to 500 feet in open area - 32 melodies/alarm tones to choose from (23 alarm melodies and 9 emergency alarms), 3 levels of volume control, and uses 16-bit coding to avoid interference from other devices. Pair the call buttons with the receiver - one call button, one receiver (or multiple receivers). The call button can be worn as a pendant, carried in a pocket, or attached to the bedside - The call button is water resistant - The nurse receiver can be wall mounted, placed near the nurse, or carried in a pocket. System range up to 500 m: easy to use with two alarm buttons/alarm system for patient and caregiver. Ideal emergency alarm for elderly or disabled