SEC 250 - Calculator SENCOR - Free user manual and instructions

Product Type	Basic calculator
Power Source	LR1130 (LR41) alkaline battery (backup)
Battery Life	Approximately 1 year under normal use
Auto Power-Off	Yes
Functions	Basic arithmetic, square root, percentage, constant, chain, memory, power calculation
Display	Standard LCD (specific size not provided)
Cleaning	Use a fine damp cloth
Disposal	WEEE compliant; do not dispose as household waste
Manufacturer	Fast ČR, a. s., U Sanitasu 1621, CZ 251 01 Ríčany
Model Series	SEC 250/8, SEC 350/8, SEC 355/8, SEC 310, SEC 320/8

Frequently Asked Questions - SEC 250 SENCOR

How do I replace the battery in the Sencor SEC 250?

The calculator uses a type LR1130 (LR41) alkaline battery. It is recommended to have the battery replaced at a professional service centre. Do not attempt to replace it yourself.

How long does the battery last?

The standard battery life is approximately 1 year, depending on usage.

Does the calculator have an auto power-off feature?

Yes, the Sencor SEC 250 is equipped with an automatic power-off function to save battery life.

How do I clean the calculator?

Use a fine damp cloth to clean the device. Do not use harsh chemicals or immerse in water.

How do I perform a percentage calculation?

For example, to calculate 30×5%, press '30', '×', '5', '%' to get 1.5.

How do I use the memory functions?

Use the 'M+' button to add to memory, 'M-' to subtract, and 'MRC' to recall or clear memory. Refer to the manual for detailed examples.

How do I calculate square roots?

Enter the number and press the square root (√) key. For example, '36' then '√' gives '6' (but note the manual shows 36+13=7, which seems to be a different operation; the function exists).

What should I do when the display shows weak or no digits?

This may indicate a low battery. Have the battery replaced at a service centre.

How do I dispose of the calculator at end of life?

Do not dispose as household waste. Take it to a designated electronic waste collection point for recycling. Contact local authorities for details.

Where is the manufacturer located?

The manufacturer is Fast ČR, a. s., U Sanitasu 1621, CZ 251 01 Ríčany, Czech Republic.

USER MANUAL SEC 250 SENCOR

The calculator is powered by a type LR1130(LR41) alkaline battery or is used as backup. The lifetime of the battery depends on how the calculator is used. The standard lifetime of the battery is 1 year. The calculator is equipped with an automatic power-off function. Have the flat battery replaced at a professional service centre, do not attempt to replace the battery yourself. To clean the device use a fine damp cloth.

SAMPLE CALCULATIONS:

Square root calculation:		Constant calculation:
36 + 13 = 7		4 × 3 = 12 4 × 5 = 20
36 + 13 =	7	4 × 3 = 5 = 5 = 5 = 5 = 5 = 5 = 5 = 5 = 5 = 5 = 5 = 5 = 5 = 5 = 5 = 5 = 5 = 12
Percentage calculation:
30 × 5% = 1.5		6 ÷ 2 = 3 8 ÷ 2 = 4
30 × 5% = 1.5	1.5	6 + 2 = 8 = 8 = 8 = 8 = 8 = 8 = 8 = 8 = 8 = 8 = 8 = 8 = 8 = 8 = 8 = 8 = 8 = 3
Chain calculation:		Memory calculation:
[(6+4) × 2 - 8] ÷ 5 = 2.4		(5 × 0.25) + (6 × 0.75) - (2 × 0.15) = 5.45
6 + 4 × 2 -8 + 5 =	2.4	5 × 2 × 5^M	MEMORY 1.25
		6 × 7 × 5^M	MEMORY 4.5
		2 × 15^M	MEMORY 0.3
Power calculation:
2^4 = 16		MRC	MEMORY 5.45
2 × = = =	16	MRC	5.45

This symbol on the product, its accessories or packaging indicates that the device conforms to European requirements for low voltage devices and requirements for electromagnetic compatibility.

EN Disposal of Used Electrical & Electronic Equipment

The meaning of the symbol on the product, its accessory or packaging indicates that this product shall not be treated as household waste. Please, dispose of this equipment at your applicable collection point for the recycling of electrical & electronic equipments waste. In the European Union and Other European countries which there are separate collection systems for used electrical and electronic product. By ensuring the correct disposal of this product, you will help prevent potentially hazardous to the environment and to human health, which could otherwise be caused by unsuitable waste handling of this product. The recycling of materials will help conserve natural resources. Please do not therefore dispose of your old electrical and electronic equipment with your household waste. For more detailed information about recycling of this product, please contact your local city office, your household waste disposal service or the shop where you purchased the product.

Manufacturer: Fast ČR, a. s., U Sanitasu 1621, CZ 251 01 Ríčany

Návod k obsluze

SEC 250/8, SEC 350/8, SEC 355/8, SEC 310, SEC 320/8