Compatible with PALM Tungsten E / ZIRE 31 / ZIRE 21 / ZIRE 72 PDA

- Turn your iPAQ PDA into a full navigation system, no other hardware needed.

• This positioning application meets strict needs such as car navigation, mapping, surveying, security, agriculture and so on.
• Only clear view of sky and certain power supply are necessary to the unit.
• It communicates with other electronic utilities via compatible dual-channel through RS-232 or TTL and saves critical satellite data by built-in backup memory.
• With low power consumption, the GR-213 tracks up to 20 satellites at a time, re-acquires satellite signals in 100 ms and updates position data every second.
• Trickle-Power allows the unit operates a fraction of the time and Push-to-Fix permits user to have a quick position fix even though the receiver usually stays off.