electronic school bell timer
1,80 on and 80 off one day
2,Battery replaceable
3,place mounting
4.ringing time 23h59m59s
Port: shanghai
Minimum Order Quantity: 100 Piece/Pieces more
Supply Ability: 1000 Piece/Pieces per Day more
Payment Terms: L/C,T/T,Western Union,MoneyGram
Contact Supplier
Packaging Detail: carton
Delivery Detail: within 4 days
electronic school bell timer
Battery replaceable
80 groups bell per day or week
ring length:1s-23h59min59s
There is a backup 12VDC battery when the city electricity is suddently powerd off
And it can switch on the 12vdc bell or other equipemnt automatically.
Description: This product designed with high performance microcomputer
chip, it can automatically switch on the ring on fixed time,
and realize automatic ring with max. 80 times one day.
It is of the highest accuracy, reliability & durability.
Application: It is widely used in school, factory and etc.
Features:
Specifications:
Dimensions: 195*175*85mm Max ringing time: 23h59m59s
Load capacity: terminal: resistive 2A
Error: 0.5s/day with automatic error adjustable functions
2s/day without automatic error adjustable functions
Power: less than 4W Weight: 510g
Condition temperature: -10-50°C
80groups alarm ringing time, with automatic and manual available
Battery: replaceable
For example
There is a factory has the working schedule as follows
On duty: 8:00-12:00 am, 14:00-18:00pm, From Monday to Friday.
On duty: 8:00-12:00 am for Saturday
The setting is following
1. 4 programs are shown as figures. (below)
2. To select the program number, press “+” to change it into 05, and click “AUTO/MAN”, at the same time “+” for 3s to cancel other programs and make it display “--:--”.
3. Continuously click ”MODE”, and make it return to the clock state.
4. Click ”AUTO/MAN” and make sure on the state of ” AUTO”.
5. Also make sure the “AUTO, OFF, ON” button on the state of “AUTO”
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