Polar Patterns: Uni-directional
Model Number: WNK
Brand Name: YIRUIWEI
Communication: Wireless
Transducer: Condenser Microphone
Set Type: Single Microphone
Package: No
Use: wireless
Style: wireless
Polar Patterns: Uni-directional
Model Number: WNK
Brand Name: YIRUIWEI
Communication: Wireless
Transducer: Condenser Microphone
Set Type: Single Microphone
Package: No
Use: wireless
Style: wireless
Product parameters:
Small size: Diameter 15mm thickness 5mm
Operating Frequency: uhf (400-470MHZ Fixed frequency,random shipment)
Use the Analog signal intercom or special receiving equipment for the receiver
Work: NFM
Operating voltage: 2.2 ~ 3V (using a 1220 coin cell battery) not include the battery
Current: about 8mA
Working time :2-5 hours (reference 1220 battery)
Working distance: 200-300 meters in open place (voltage at different distances vary)
Application: Sound monitoring, security.
How to use
1: open the Analog signal intercom
2: the input frequency (frequency tag on the antenna of the microphone)
3: use CR1220 3 v battery (not included)
4: when the battery without electricity, microphone, there will be noise and affect the transmission distance