Origin	China
Model Number	SD-220
Brand Name	Zhongyan

Time controller

(1)No battery, no clock put-in, time counted down by the chips, don't work when power off.

(2)Working voltage is 110V or 220V alternating current.

(3)One way electromagnetic relay inside, control output(two state: Constant: C-A, switch off C-B)

(4)One standard IC card socket (Optional PTC protect), storage card is 93C46

(5)Inside EPROM is 93C46, preserve one remaining time at each minute.

(6)Checkout when switch off, prevent chips from writing data into EPROM

(7)Including 64 digits encrypting validate arithmetic, preventing data in the IC card to be changed purposely

(8)Put-in wire-jumper for clearing

(9)4 digits LED display<8.8.8.8>displaying one remaining day each minute

(10)Region serial number to distinguish the scope.

(11)Controller has three states: Initial state, debugging state and running state. Convenient for manufacturing, checking and using.

(12)Support eight cards; Clearing card, setting card, limiting card, debugging card, enquiring card, relay, time adjustment card.

(13)Support displaying alarm, alarm when switch off at remaining days.

(14)Enquiring card, setting card and limitation card can view various data in the controller, and backward writing function.

(15)Supplement user a limiting card as per the record. The controller support minus remaining days and deduct form the new one automatically.

(16)It can be used both in low or high voltage.