Answer Key - answer transmitted automatically. Deep sleep mode when not in use.
Durable, rugged case ensures maximum longevity under extreme condition *
200 foot range (400 ft coverage) - Select a channel in less than five seconds, indicating session choice - Select a channel anytime - even when a session is underway
Average battery life is 6 to 12 months (takes 2 CR2032 coin batteries)
Will not interfere with other technologies. Not limited to line-of-sight transmission., Deep Sleep Mode, Answer confirmation through two-way communication, p to 82 sessions can be running at one time in close proximity without interference.