Features 
 1, the shell is made of molded aluminum alloy type, surface anti-static spray processing; has good corrosion resistance, impact resistance and protective properties; 
 2, the system does not need a host connection, each then station with independent power supply and amplifier; 
 3, the hook switch a magnetic induction switch technology, the whole, good sealing performance, improve the on-hook operation reliability; 
 4, the phone circuit board design has a sleep function, signal the driver to enter the work state, and extend the service life; 
 5, 50W high power output, the best broadcast effect; 
 6, with a call Mute function to ensure that if station call effect 
 7, then the station DSP anti-noise processing technology, to effectively suppress background noise and improve call quality 
 8, then station circuit board using a digital modular design, inspection and maintenance convenience. 

 SKHZ-1A type explosion-proof public address intercom station 
 Basic functions 
 SKHZ-1A wall-mounted outdoor explosion-proof public address speech machine calls and intercom and public address intercom system and explosion-proof junction boxes, explosion-proof speaker. Station, then shell with integrated structural design, beautiful appearance and strong, but also has good protection, corrosion and impact resistance. If station six channels. 1 call channel, 5-way intercom channel with a channel selection knob a call knob on the front panel. According to user requirements can be set in the panel volume control knob, the handle is equipped with a magnetic induction switch, which greatly facilitates the user to make calls / call handling. For strong noise in the production of outdoor, wet, dusty, corrosive gas explosion hazardous areas and other harsh industrial environments place. 

 The main technical indicators: 
 Rated voltage 220V / 50Hz 
 Rated current ≤ 1A transmitter impedance of 100Ω 
 Receiver impedance of 130Ω, 
 Handle cable PVC, stretching the length of 2 m 
 Protection class IP65 
 Explosion levels the Exd {ia] iaIICT6 
 Frequency Response 250 ~ 7500Hz range: ± 1.5dB 
 Distortion less than 1.0% (1000Hz) 
 Proof speaker power: 25-50W adjustable 
 Frequency response range of 250 ~ 10KHz: ± 1.5dB 
 Less than 1.0% distortion (12W, 1000Hz) 
 Output power of 15 ~ 50W output impedance 8Ω, 16Ω 
 Noise immunity: the words which stand 120dB noise environment, the call clarity. 
 Operating temperature -30 ° C to +80 ° C, relative humidity <95% 
 Atmospheric pressure 86 ~ 106Kpa 
 Color orange 
 Import and export of thread size, G3 / 4 G1 / 2 
 Dimensions 360 * 300 * 160mm 
 Weight 17kg