The RC-86 is designed to remotely control setting/unsetting, trigger panic alarms, and control other appliances. The big advantage is the possibility of configuring it to 433 MHz (JA-60 systems, UC-216, UC-222 receivers etc). The keyfob indicates its flat battery.
Model JA-63KR (equipped with the "R" radio communicating module) has 16 wireless zones. Up to two JA-60 detectors can enrolled into each zone (totally 32 as a maximum). In total model 63KR has 20 zones (4 wired and 16 wireless).