Digital Remote Home Surveillance Four Screen DVR Transmitter 250cd/m2 Brightness

Product Model:GD7105

Product description: with NetWork four-screen wireless DVR

Product Model:GD8104

Product Description: Four-screen wireless DVR transmitter

Serial	Item	Unit	Specification	Remark
Camera
1	Lens specifications		F/No=2.0,f=2.4mm
2	Color type		Day and night
3	Horizontal viewing angle	degree	70±5
4	Video format		NTSC/PAL
5	Image Sensor		1/5",CMOS
6	Effective Pixels	Pixels	656*488
7	Minimum illumination	Lux	0 (IR ON)
8	Night vision distance	m	3~5
9	Infrared illumination		940nm; IR LED
10	IE LED start/stop threshold	Lux	≦2lux, IR LED ON
			≧15lux, IR LED OFF
Video
11	Video frame rate	fps	30(max)
12	Video resolution		VGA
13	Video encoding format		MPEG-4
Audio
14	Frequency response	Hz	50~15000
15	Audio sampling accuracy	Bit/KHz	16bit/8Khz/Mono
16	Audio compression format		PCM
17	Microphone sensitivity	dB	≦-38db
PIR
18	Induction wavelength	um	7~14
19	Sensing distance	m	≦5
20	Induction angle	degree	≧100
RF
21	working frequency	MHz	2400－2483.5
22	Data bandwidth	Mbps	4.4(20dB BW)
23	Modulation/demodulation method		16QAM,QPSK,BPSK
24	Transmit power	dBm	+14dBm@ 16QAM EVM 5%, +18dBm @ QPSK EVM 8%
25	Receiving sensitivity	dBm	-72dBm@QAM, -85dBm@QPSK
26	security		proprietary frequency hopping signaling with digital modulation
			32Bit ID
27	Antenna gain	dBi	3(Omni-directional Dipole)
28	Unobstructed transmission distance	m	＞200
General
29	Power Adapter		DC +5V/2A
30	Working current	mA	400(max)
31	Weight	g	300±30
32	Size	mm	132*64*57mm
33	waterproof level		IP54
34	Operation Temperature	℃	-10～+50
35	Storage Temperature	℃	–20～+60
36	Operation Humidity	RH	15%~85%

     Gospell Digital Technology Co., Ltd. (Stock Code: 002848) is a high-tech enterprise in the field of electronic information. It is recognized as a "benchmark enterprise in the electronic information industry" and a "key high-tech enterprise of the National Torch Plan" in China. It is a leading enterprise and backbone enterprise in the broadcast television transmission and satellite transmission service industries. Additionally, it is a leading enterprise in the electronic information manufacturing industry in Hunan Province and is internationally renowned as a brand enterprise. It is also recognized as a nationwide contract-abiding and trustworthy unit and a Chinese quality and integrity enterprise. The company was established in 1993 and founded Chenzhou Gospell Digital Technology Co., Ltd. in 2001. On February 13, 2017, it was listed on the Shenzhen Stock Exchange. In 2020, Weifang Bincheng Investment Development Co., Ltd. became the controlling shareholder of the company, with the Weifang State-owned Assets Supervision and Administration Commission becoming the actual controller of the company. The company is headquartered in Gospell Industrial Park, Suxian District, Chenzhou City, Hunan Province. It has eight wholly-owned subsidiaries: Chengdu Tongcy Digital System Co., Ltd., Chenzhou Gospell Digital Technology Co., Ltd., Chenzhou Gongtian Electronic Ceramic Technology Co., Ltd., Chenzhou Gospell Precision Manufacturing Co., Ltd., Gospell Digital Technology (Shandong) Co., Ltd., Gospell Digital Technology Hong Kong Co., Ltd., Gospell Digital Technology India Subsidiary, and Shenzhen Qianhai Xutian Communication Co., Ltd. It operates one production base, consisting of five major workshops: SMT workshop, DIP workshop, assembly workshop, injection molding factory, and hardware factory, with a total of 45 production lines.

    As a national high-tech enterprise, Gospell boasts a sophisticated technology R&D matrix and has mastered more than 20 core technologies in the audio and video field. Several technological innovations have been recognized as "national key new products" and "provincial-level scientific and technological achievements," and have received the "Hunan Province Science and Technology Progress Award." As of December 2023, the company has undertaken eight provincial-level and higher scientific and technological achievement transformation projects. It holds over 65 intellectual property patents, including 52 invention patents, 9 utility model patents, and 4 design patents. Additionally, Gospell has secured 117 computer software copyrights.

   We commenced our overseas operations early, embarking on digital television system construction in international markets as early as 2004. To date, we have constructed over 200 ground and cable digital television systems, exclusively supplying core equipment, in more than 60 countries across Asia, Africa, Latin America, and Europe.