HC106 - Calculator AURORA - Free user manual and instructions

Product Type	Calculator
Brand	Aurora
Model	HC106
Dimensions	Approx. 14 x 8 x 1.5 cm
Weight	Approx. 80 g
Power Source	Solar cell with LR44 battery backup
Battery Type	1 x LR44 (alkaline)
Display	LCD, 8 digits
Key Functions	Basic arithmetic (+, -, ×, ÷), percentage, square root, memory (M+, M-, MR, MC)
Auto Power Off	After approximately 7 minutes of inactivity
Operating Temperature	0°C to 40°C
Cleaning	Wipe with a soft, dry cloth. Do not use solvents.
Storage	Store in a cool, dry place away from direct sunlight.
Safety Warnings	Keep away from water and excessive heat. Do not disassemble.
Spare Parts	Not available; device is non-serviceable.
Repairability	Not repairable; replace unit if defective.
Included Accessories	None (calculator only)
Warranty	1 year limited warranty

Frequently Asked Questions - HC106 AURORA

How do I turn on the calculator?

Press the ON button. If the display is dim, ensure adequate light for the solar cell or check the backup battery.

What type of battery does the HC106 use?

It uses one LR44 alkaline battery as backup for the solar cell. Replace when the display becomes faint.

How do I use the memory functions?

Use M+ to add the displayed number to memory, M- to subtract, MR to recall, and MC to clear memory.

Why is the display blank or dim?

Ensure the calculator is in a well-lit area for solar power. If still dim, replace the LR44 battery.

Can I use the calculator in direct sunlight?

Yes, but avoid prolonged exposure to extreme heat. Direct sunlight may overheat the device.

How do I calculate a percentage?

Enter the number, press the % key after the operation. For example: 200 × 10 % gives 20.

What does the square root button do?

Press the √ key after entering a number to calculate its square root.

How do I clean the calculator?

Wipe the surface with a soft, dry cloth. Do not use water or cleaning agents.

Is the calculator waterproof?

No, it is not waterproof. Keep away from liquids. If spilled, remove battery and let dry completely.

Where can I find the manual?

The user manual is available for free download in PDF format on the product page or from the manufacturer's website.

USER MANUAL HC106 AURORA

PROBLEM	INPUT	DISPLAY
2+3-1=4	2+3-1=	4.
2.4×6÷8=1.8	2.4×6÷8=	1.8
2×(3+4)-5=9	3+4×2-5=	9.
3×2.54=7.62	2CE3×2.54=	7.62
2+3=5	2+3=	5.
4+3=7	4=	7.
2-3=-1	2-3=	-1.
4-3=1	4=	1.
2×3=6	2×3=	6.
2×4=8	4=	8.
2÷4=0.5	2÷4=	0.5
3÷4=0.75	3=	0.75
2+3+3=8	2+3=	8.
6-2-2=2	6-2=	2.
21=8	2×=	8.
20×25%=5	20×25%	5.
5÷20%=25	5÷20%	25.
20×(1+15%)=23	20+15%	23.
20×(1-20%)=16	20-20%	16.
2×3=6	2×3M+	6.
-) 3×4=12	3×4M-	12.
+) 4×5=20	4×5M+	20.
14	M	14.
	M	14.
		5.