it show table number in the screan?

Yes, it shows the number on the screen.

If several pagers are pressed, which number is displayed, the first table o the last?

If several call pagers are pressed in a short time, the receiver will show from the first number to the last number, and will store the latest 10 numbers with scrolling display(show different numbers each 2 seconds). You can also press ESC to clear all the numbers. Or you can choose multi-button pagers which with a Cancel key.

How to adjust the volume?

Dear Customer, About volume adjusting of the receiver. 1)Standby mode, press the key [UP] or [DOWN] to choose the volume you want, 01-15means 15 kinds of volumes. 2)Press the key [ESC], and back to standby mode. Hope my answer can help you. Have a nice day!

what is a distance range?

Dear Customer, Thank you for your question. The call distance for this SINGCALL wireless calling system is 130-200ft indoors, 1600ft in the open air. The distance can be affected by many factors, such as the number of walls, the material of the wall, etc. If you want to transmit a longer distance, you can buy a SINGCALL wireless signal amplifier(ASIN: B00EC6OZ7M). Hope my answer can help you. Have a nice day.

ASIN	B00EDEYZ6E
Answering System Type	Digital
Best Sellers Rank	#472,039 in Office Products ( See Top 100 in Office Products ) #391 in Pagers
Brand	SINGCALL
Compatible Devices	PSTN, ISDN, VoIP services
Conference Call Capability	2 way
Customer Reviews	3.4 out of 5 stars 11 Reviews
Dialer Type	Single Keypad
Enclosure Material	Acrylonitrile Butadiene Styrene (ABS)
Global Trade Identification Number	00519527504873
Is there Caller ID	Yes
Item Dimensions	15.75 x 11.81 x 2.36 inches
Item Weight	1.9 Kilograms
Manufacturer	Dongwei technology
Material	Acrylonitrile Butadiene Styrene (ABS)
Multiline Operation	Single-Line Operation
Number of Batteries	20 12V batteries required.
Phone Standby Time	2 days
Power Source	Battery Powered
Telephone Type	Cordless
UPC	519527504873
Unit Count	1.0 Count

SINGCALL Wireless Restaurant Table Call System,Waiter Caller Get Attendant Press,1 Display 20 Bells

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