Energy meter ORNO EM-1/B — two-tariff wattmeter with LCD display, internal battery, black

ORNO EM-1/B is a two-tariff wattmeter with an LCD display and an internal battery designed to measure and record electrical energy consumption across two separate tariff periods. The device displays instantaneous power, cumulative energy for each tariff and total consumption on a clear LCD, while the internal accumulator preserves recorded data during short power outages. Its compact black enclosure fits domestic installations and small commercial setups where monitoring of energy usage by tariff is required.

Advantages

The meter supports two independent tariff counters, allowing accurate separation of energy consumption according to time-of-use pricing. A backlit LCD provides legible readings of power and energy values, and the internal battery keeps totals stored when mains power is interrupted. The unit is compact and simple to install, with a user interface focused on essential readouts and reliability for continuous monitoring.

Suitable for

• Residential apartments and houses that use time-of-use tariffs
• Small commercial premises requiring tariff-based energy tracking
• Cost allocation between tenants or departments based on consumption periods
• Monitoring and verifying electricity usage for energy-saving measures

Key specifications

• Measurement type: active energy (watt-hours) with two separate tariff registers
• Display: LCD showing instantaneous power, per-tariff and total energy readings
• Power backup: internal rechargeable accumulator to retain data during power loss
• Enclosure color: black; compact form factor suitable for panel or wall mounting
• Suitable for single-phase residential and small commercial installations

How to use

Install the ORNO EM-1/B in accordance with local electrical safety regulations, connecting the meter to the incoming phase and neutral as required for single-phase metering. After wiring, verify that the LCD powers up and that the meter records instantaneous power. Configure tariff settings and reset counters if necessary following the manufacturer’s instructions. During operation, read the LCD to view current power and cumulative energy for each tariff; the internal battery will maintain totals if mains supply is interrupted.

Usage recommendations

Locate the meter in a dry, ventilated area away from direct sunlight and excessive heat. Ensure connections are tightened to specified torque values and that installation is performed by a qualified electrician. Periodically record readings for billing or monitoring, and check the accumulator function after extended power outages.