Type：STM-815

Features:
•Great ergonomic design and handy
•Quickly find the pair cables among so many cables
•The function of speed and frequency changing: speed choice on testing
•Provide Earphone used in very noisy environment
•Security: safety using (the probe can directly contact bare gold line)

Specifications:
Emitter working current: <=10mA
Receiver working current: <=30mA
Signal transmission format: Multi-frequency impulse
Signal output electric status: 8Vp-p
Distance of signal transmission: >=3km
Volume regulate function: Yes
Earphone for noise environment : Yes
Sensitive: Induction distance less than 20 mm, strong anti-jamming ability
Storage temperature: -20 to 50C
Operation temperature: -10 to 40C
Battery: DC 9V terrace battery (not included)
Battery life time: >50hrs continuous use
Emitter: 126*49*34mm
Receiver: 175*42*27mm