Question 1

Will the range reach between 2 offices down the hall from each other?

Accepted Answer

Dear Customer,
Thank you for your question.
The call distance for this SINGCALL wireless calling system is 130-200ft(40-60m) indoors, 1600-2600ft(500-800m) in the open air. 
The distance and the material of the wall will affect the distance of the call. Since you did not tell some details such as the distance, we cannot give you an accurate answer, but you can refer to the distance above. 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.

Question 2

Hi, Can you add buttons to the system? I need to have 22 attached to one receiver.

Accepted Answer

Dear Customer,
Thank you for your question.
It is ok to add more call buttons to this wireless calling system. Please visit the SINGCALL store or search B01EMYW85O on Amazon to find the additional call buttons that meet your requirements. 
https://www.amazon.com/dp/B01EMYW85O?ref=myi_title_dp 
If you want to increase the receiving distance of the receiver, you can buy a signal amplifier (ASIN: B00EC6OZ7M ) to meet your needs.
https://www.amazon.com/dp/B00EC6OZ7M?ref=myi_title_dp
Hope my answer can help you.
Have a nice day!

Question 3

hi ,  if i buy this product can i buy 2 watches and add together ? is that possible ?

Accepted Answer

Yes, watches cna work at the same time, you can add the watch you like.
Link of the watches:
APE6900:
https://www.amazon.com/dp/B01N1RQT6E/ref=sspa_dk_detail_0?psc=1&pd_rd_i=B01N1RQT6E&pd_rd_w=HXQEx&pf_rd_p=45a72588-80f7-4414-9851-786f6c16d42b&pd_rd_wg=qMqrX&pf_rd_r=6MK04PB9H9KXYFZWT652&pd_rd_r=c70c7228-0da9-4c44-94fb-384feb0efb0b&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUFYVk9YSVFBQTcwSVMmZW5jcnlwdGVkSWQ9QTA4NjI1OTExNUhPQkIzWDgyNDlZJmVuY3J5cHRlZEFkSWQ9QTA1MzIyODdKM0wzRFBURjhJQVomd2lkZ2V0TmFtZT1zcF9kZXRhaWwmYWN0aW9uPWNsaWNrUmVkaXJlY3QmZG9Ob3RMb2dDbGljaz10cnVl

APE6800:
https://www.amazon.com/dp/B018V8MQYU/ref=sspa_dk_detail_5?psc=1&pd_rd_i=B018V8MQYU&pd_rd_w=HXQEx&pf_rd_p=45a72588-80f7-4414-9851-786f6c16d42b&pd_rd_wg=qMqrX&pf_rd_r=6MK04PB9H9KXYFZWT652&pd_rd_r=c70c7228-0da9-4c44-94fb-384feb0efb0b&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUFYVk9YSVFBQTcwSVMmZW5jcnlwdGVkSWQ9QTA4NjI1OTExNUhPQkIzWDgyNDlZJmVuY3J5cHRlZEFkSWQ9QTA1MzE2MDdFWk4zUzBaRzZKQTgmd2lkZ2V0TmFtZT1zcF9kZXRhaWwmYWN0aW9uPWNsaWNrUmVkaXJlY3QmZG9Ob3RMb2dDbGljaz10cnVl

APE6600:
https://www.amazon.com/dp/B00EC6P0K8/ref=sspa_dk_detail_1?psc=1&pd_rd_i=B00EC6P0K8&pd_rd_w=HXQEx&pf_rd_p=45a72588-80f7-4414-9851-786f6c16d42b&pd_rd_wg=qMqrX&pf_rd_r=6MK04PB9H9KXYFZWT652&pd_rd_r=c70c7228-0da9-4c44-94fb-384feb0efb0b&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEzQ0lTSkZHQk44SjdEJmVuY3J5cHRlZElkPUExMDAzOTk2M1ZFRkc1SFBLVUlLTSZlbmNyeXB0ZWRBZElkPUEwNTMwNjI3MzlGRFFUU0dBN1kwUyZ3aWRnZXROYW1lPXNwX2RldGFpbCZhY3Rpb249Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU=

Question 4

Is it possible to keep the display off in standby mode?  Don’t want the clock showing.   Can you turn this off?

Accepted Answer

Dear Customer,
Thank you for your question.
The standby mode (time display mode) can not be changed and you can change the number display time to only show the number rather than the clock. Please follow below steps to set [F03] to [00].([00]means unlimited display )
Display time setting
1)Standby mode, keep pressing key [FUN] till [F01] appears.
2)Press key [UP]/[DOWN] repeatedly till [F03] appears.
3)Keep pressing key [FUN] till a number [20]appears.
4)Keep [UP]/[DOWN]to choose the display time wanted.
[01～99]means 1-99 seconds [00]means unlimited display 
5)Keep press [FUN]for 3 seconds, the screen shows [F03].
6)Keep pressing [ENT]back to standby mode, time display setting finished.
Hope my answer can help you.
Have a nice day!

Manufacturer	EASTWAY INTERNATIONAL (HK) LIMITED
Brand	SINGCALL
Item Weight	2.35 pounds
Product Dimensions	14.57 x 8.27 x 2.76 inches
Batteries	10 CR2 batteries required. (included)
Color	Black
Material Type	Acrylonitrile Butadiene Styrene (ABS)
Manufacturer Part Number	SC-R50 310S 1-10

Touchable keys, 7 music. Standby mode, showing the current time.

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