Incomplete input of system password, please check if correct format “*# XXXX #” (XXXX as system password) has been entered as required in manual.
System password has been changed. Inquire reader’s parameter to get the password if it is networking reader. Contact your nearby agent or return to the manufacturer if it is stand-alone reader.
Bad wire arrangement which might cause short circuit of the PC board. Check the power supply and the control wires in order to avoid the wires pressing on the PC board causing bad contact, short circuit and interference.
Strong interference from other equipments or same type unit caused the new unit is unable to enter Setting Mode or slow response from the keypad. Move the new unit to other place to test again