The Inovonics EN1223S single-button water-resistant pendant with single-button press-and-hold activation and compact design is ideal for assisted living installations. The EN1223S-60 single-button water-resistant pendant transmitter sends check-in messages every 60 minutes to allow for use in a UL 2560 certified system. Main features: can be worn in the shower, bathtub or rain. Neck cord and belt clip included for easy conversion. Fully supervised to help ensure reliability Weighs less than 1.3 oz (40 g). Dimensions: 2.2” x 1.9” x 0.72” (5.6 cm x 4.8 cm x 1.8 cm). Panasonic CR2450 Battery. Water resistant, non-submersible EchoStream® frequency: 902-928 MHz, frequency hopping spread spectrum. Check-in time frequency: 3 minutes.