Made of high precision components,product is highly precise,quick,small(61*58*28mm),light(62g)and easy to operate.It could alarm automatically towards body wrist strap earth system,and real-time monitor the work status of anti-static wrist strap;being so small,the moniter nearly takes up no room,and operates without noise.It will provide reliable insurance to wrist strap earth system in anti-static work area.
 
Earth system of body wrist strap in normal operation:no noise,green linght  on.
 
Earth system of body wrist strap in circuit-broken statos:buzz noise,red light glittering.