1. Product Introduction

The device consists of four parts: a sensor, an outdoor audible and visual alarm unit, an indoor alarm, and a solar power supply system. It is widely applicable for water level measurement and warning in rivers, lakes, ditches, and reservoirs, as well as for water level observation and alarm in control sections of village rivers (streams) along riverbanks. The alarm water level value can be set, and when the water level reaches the threshold, it automatically triggers audible and visual alarms. Simultaneously, the water level alarm data can be transmitted to the indoor display for observation and monitoring by warning personnel.

The sensor is connected to the outdoor alarm unit via wired communication, while the indoor alarm unit connects to the outdoor alarm unit wirelessly or through wired means. Both the indoor and outdoor alarm units feature a dual audible and visual alarm mechanism.

2. Product Parameters

Outdoor Alarm Unit

Collector Operating Voltage: 12V

Number of Water Level Contacts: 3

Alarm Water Level Deviation: ≤±1cm

Connection Method Between Outdoor Signal and Indoor Alarm: 433M Low-Power Wireless

Wireless Unobstructed Line-of-Sight Transmission Distance: 2000 meters

Alarm Power: 50W

Operating Voltage: 12V

Solar Panel: 5W (Open Circuit Voltage 21.6V±3%)

Solar Charge Controller Current: <15A

Operating Temperature: 0°C to 70°C

Mean Time Between Failures (MTBF): ≥40,000 hours

Indoor Alarm Unit

Alarm Volume: ≥85dB

Power Supply for Indoor Alarm: 3 No. 1 batteries, supports automatic switching between AC/DC power, with batteries as backup power

Alarm Output Interface: Load Impedance 600Ω/Vpp≥1V

Operating Temperature: -10°C to 70°C

Mean Time Between Failures (MTBF): ≥40,000 hours