The first battery-free wireless doorbell in the world. No batteries, no pollution. No wires, no limits. 20 years service life The world's first batteryless wireless doorbell.No batteries, no pollution.No wires, no limits.20 years service life.Super long distances of 280...

The first battery-free wireless doorbell in the world. Self-powered button. AC-powered chime. 20 years service life The world's first batteryless wireless doorbell.No batteries, no pollution.No wires, no limits.20 years service life.Super long distances of 280 meters.Product...

The first battery-free wireless doorbell in the world. No batteries, no pollution. No wires, no limits. 20 years service life The world's first batteryless wireless doorbell.No batteries, no pollution.No wires, no limits.20 years service life.Super long distances of 280...

The first battery-free wireless doorbell in the world. No batteries, no pollution. No wires, no limits. 20 years service life The world's first batteryless wireless doorbell.No batteries, no pollution.No wires, no limits.20 years service life.Super long distances of 280...

The first battery-free wireless doorbell in the world. No batteries, no pollution. No wires, no limits. 20 years service life The world's first batteryless wireless doorbell.No batteries, no pollution.No wires, no limits.20 years service life.Super long distances of 280...

FIRST batteryless wireless doorbell in the world. No batteries. No pollution. No wires. No limits. 20 years service life. The world's first batteryless wireless doorbell.No batteries, no pollution.No wires, no limits.20 years service life.Super long distances of 280 meters. HK...

The first battery-free wireless doorbell in the world. No batteries, no pollution. No wires, no limits. 20 years service life The world's first batteryless wireless doorbell.No batteries, no pollution.No wires, no limits.20 years service life.Super long distances of 280...

Die-cast aluminium clamp and bronze,Durable spiral cable, cable length can be customized. It is pupular in chemical plants To discharge the static accumulation of hazardous products during storage and transportation, we provide different kinds of static grounding clamps with...

Power supply is not needed and battery replacement is unnecessary during normal operation within five years It is used to discharge static electricity in the locations such as gasoline filling stations and gas filling stations which is in the process of loading or unloading a...

When the resistance exceeds 60ohms, it gives out alarm and outputs on-off signal to the automatic control syatem to disconnect t It is intended to use in the petrochemical, pharmacuitical, paint and coating industries in which static discharging is needed. It comprises controller,...