I installed mine and it worked fine but after seeing crash reports I decided to do a colonoscopy on this device. Here's what I found. In fact, this block has only 1 microcircuit, 1 relay and 2 transistors. After measuring the voltage, I found that 16.55 volts appeared on pin 8 of the microcircuit power supply. The IC's nominal supply voltage is 5-15 VDC, with 16 VDC being the absolute maximum. The relay has a 12V, 14.5V DC coil. All my measurements were made at a mains voltage of 125 VAC. This is important as there is no voltage regulator in the design so actual voltages will vary depending on the value of the incoming line voltage as well as whether the relay is active or not. I have since modified my block to lower the operating voltage below the components maximum rating. When the IC supply voltage exceeds the maximum value, I'm not surprised why some people see early failure. I wouldn't worry if your line voltage is less than 115VAC as long as it's much higher. tic tok! I also added a 1 megohm potentiometer in series with resistor R4. This gives an adjustable delay time from 10s to 1min. This change was suggested by another reviewer and works great.
Saniflo 008 SANIVITE Heavy Duty Water Pump - Gray Color, Enhanced for Higher Ranking
30 Review
DEKOPRO 750W Submersible Sump Pump With Float Switch And 16Ft Cable For Efficient Water Movement In Swimming Pools, Tubs, And Gardens
25 Review
Intex skimmer 28000
24 Review
AMIR Indoor Outdoor Thermometer, Digital Hygrometer, Humidity Monitor Wireless With LCD Display, Room Thermometer And Humidity Gauge For Home, Office, Baby Room, Etc(Mini, Battery Not Included)
19 Review
Men'S Heated Jacket: PROSmart Waterproof With Hood And 12Volt Battery Pack - Black
24 Review
Soundproof Ear Muffs For Shooting - Adult Hearing Protection Earmuffs For Noise Cancellation And Safety
30 Review
Chums Original Cotton Eyewear Retainer - Adjustable Unisex Sunglasses Keeper (Standard-End)
27 Review
Stay Safe And Visible With SHORFUNE High Visibility Safety Vest - ANSI/ISEA Certified, Orange With Pockets, Mic Tabs, And Reflective Strips In Medium Size
30 Review