① Operation displaying lamp
② Display unit for indicating temperature
③ Lamp displaying set locking/releasing
④ Lamp displaying door locking/releasing
⑤ Setting button
⑥ Scan button
⑦ Alarm off button
⑧ Cold alarm lamp
⑨ Warm alarm lamp
⑩ Battery lamp
⑪ Temperature down setting button
⑫ Temperature up setting button
⑬ Power button