 Microcontroller based Preprogrammed Siren/Bell controller built in Real time Clock with 4Digit LED Display.  Displays Real Time In Normal Mode.  Very simple and easy to set and programme.  User friendly keys for Programming using SET, REPEAT and MANUAL Keys. (Refer Product Manual).  Definable Duration Intervals ON/OFF for Each Programme for Long Bell, Short Bell etc  Option Jumper with Enable and Disable Programme to avoid Programme TAMPER.  Option with Manual Operation  Programmable for 8 Working Days and 2 Holidays(Regular Saturday/Sunday) with 40 different Programme  Set 8 Normal working Days Programme with Holiday and Press REPEAT to Repeat in Regular Auto Operation.  Eliminates Human Error, Anxiety or Tension.  Selection of Bell ringing duration to distinguish between Shifts / Lunch break /Closing time bell.  Power failure Proof. No re-setting required after any Power outage.  Can be fitted with existing manual electric bell system. Specification:  Automatic School Bell Timer Panel, M S Panel Powder Coated with Dimension:H300 x B210 x 150DMM  Siren/Bell controller Dimension: 72 x72mm with 230V Operation with 1 Relay Output (NC/NO/COM).  Selector Switch for Auto /Manual Mode Selection on Panel..  Manual Operation PUSHBUTTON on Panel during Manual Mode Selection.  Bell/Siren Output with Indication Lamp on Panel.  Power ON/OFF Selector Switch on Panel.  Control Panel with MCB, Isolation Relay for BELL/SIREN Output and TB for INPUT and OUTPUT.  Cable Entry Gland for Power Input and Output