products explained that,
    99 group multipurpose wireless ringing systems are specially for place development and so on the hospital, hotel, restaurant, teahouse, school, plot one kind of wireless callmakers, it most may allow to select and match 99 wireless call launchers, each launcher all may establish a fixed number, may from 01 to 99, so long as like this presses a wireless call launcher every time the red button, on the main engine can demonstrate the corresponding number immediately, and sends out bites rat-a-tat music sound or other musics (16 may supply choice fixed broadcast way and autocycle broadcast way).
Selects and matches the wireless acquisition sensor, may become one to reach as high as 99 defense area scenes to report to the police the main engine!
Function synopsis:
1st, the launcher uses the sound surface resonator steady frequency electric circuit, the frequency departure is small, the transmitting range is far, performance stable reliable.
2nd, the launcher uses 2262 code chips, the main engine may match 99 different numbers the launchers.
3rd, the main engine uses the advanced double detection reception module, the receive effect is good, the receive distance is farther.
4th, 3 LED high bright demonstration call number, number of calls.
5th, in sets at the loudspeaker, music prompt, also volume size adjustable.
6th, 16 music autocycle broadcast/fixed music broadcast way may facilitate the establishment; Presses under the fixed music broadcast way chooses the key to be possible to choose 16 musics random.

7th, the main engine has repositions and upturns the button, facilitates before the inquiry 10 call numbers.
8th, the postpositioned ALARM switch, might with the wireless smoke feeling, be eternally grateful, gate magnetism, the infrared acquisition aid and so on matches the interplanting 99 defense area recognitions the scene alarm apparatus, the indicating lamp extinguishment instruction is triggered once has reported to the police.
9th, the wireless transmission, exempts the wiring, the installment, the operation is simple, is suitable for the hospital, the restaurant, the Kara OK side building, the restaurant, the teahouse, the plot, the school and so on any need call place use.
10th, has 15 channels, but are most in the identical region may use 15 set of call server altogether 1485 callmakers not to be able to disturb mutually.

On the main engine has 3 great size nixietubes, left side 2 red use for to demonstrate 01~99 call numbers, right side have the green nixietube, is uses for to demonstrate the call the number of times.On the main engine has 3 pressed key 1 volume knob.
On the main engine has 3 great size nixietubes, left side 2 red use for to demonstrate 01~99 call numbers, right side have the green nixietube, is uses for to demonstrate the call the number of times.On the main engine has 3 pressed key 1 volume knob.
The pressed key function showed that,
Repositions the key to eliminate calls the number
 up key may upturn has called 10 numbers
 to choose the key under the fixed music broadcast way, 16 musics may choose
 the potentiometer adjustment volume size

Technical specification: 
Operating frequency: 433MHz
 modulation way: ASK
 emissive power: Is smaller than the 300mW
 data transmission speed: 1.5K following
 voltage/power: AC220V/3W
 receiving sensitivity: - 110dB
 speaker output: 0.5W
 transmitting range: 1000 meters (spacious)
 main engine size: 160×120×42.5mm (long * width * thick)
 callmaker size: 85×37×16mm
 channel establishment method:
Launcher D0~D3 is the channel establishment, corresponds 1~15 channels the main engines.Sees the product attached list.

Music autocycle broadcast, fixed music broadcast way establishment method:
Launcher A7 is the music autocycle broadcast/fixed music broadcast way establishment, the music which for the autocycle broadcast meets 0 or hanging - namely each time presses down when callmaker button the main engine broadcasts to be all different, altogether 16 autocycle broadcasts; Meets 1 o'clock - namely each time presses down when the callmaker button for the fixed music broadcast the main engine broadcasts the music is all same, has not pressed chooses in front of the key to broadcast bites rat-a-tat 2, presses chooses the key to be possible to choose 16 musics random.Launcher A7 also may mix the establishment, for instance somewhat meets 0 somewhat to meet 1

Call number establishment method:
The A0~A6 data code (corresponding code chip 1~7 feet) must be able to demonstrate the serial number correctly identically with the next table
 

On the table only enumerated the callmaker 1~10 serial number data codes, inside the main engine packing box had 1~99 detailed code tables, on in the table 1 expression correspondence foot met the high level (H or + expression), 0 expression correspondence foot met the low level (L or - expression, also might hanging).
   
    The wireless callmaker may have 500 meters and 1000 meter two kind of specifications according to the emissive power, here said the distance refers to the spacious transmitting range, the high frequency signal in has under the mask actual use environment to be lower than this value by far, generally only then nominal value 1/10.
How sets up a wireless ringing system economically the method:
    When some situations and so on hotel, hospital, cafe needs to set up a wireless call service system, because of the scene environment influence, the different room and the main engine distance difference is very big, considered the system the efficiency, we may leave the main engine quite near room to select 500 meters callmakers, selects 1000 meters callmakers compared with the far room, the specially far minority room also may select 2000 meters callmakers, if the quite far room quite are many also may consider with the wireless signal repeater, it may receive the wireless signal and expands the power retransmit, this has in the corner structure corridor in some the effect to be extremely good.