I can't win with these little TA-4 controllers. The first had some pretty serious accuracy issues using a type K thermocouple. It wasn't linear so it couldn't be calibrated (10F too high in an ice bath, 11F too low at room temperature, 15F too high with boiling water ). The second block read the exact same TC perfectly, but it was the mechanical relay version, not the SSR version (although I ordered the TA4-SNR). The 3rd order was the same as the 2nd (TA4-RNR instead of TA4-SNR). The problem is that the box has stickers for BOTH devices. The sticker above mentions SSR, and the sticker on the much less visible end says Relay. From the seller's point of view looking at the top of the box, it looks like they are shipping the right item! I can't recommend buying from BrainyDeal or Sain Store (are they the same?) until they fix this issue. I bet some of these things are mislabeled and this problem will persist. The TA4-RNR version I tested worked great, but my project required SSR so it couldn't be used.
Qingping Qingping Bluetooth Smart Alarm Clock Green
22 Review
Xiaomi iHealth Meter Thermometer White
24 Review
ICQUANZX LCR-T7 Transistor Tester: Advanced TFT Diode Triode Capacitance LCR ESR Meter
14 Review
VIVREAL 4 In 1 Stud Finder Wall Scanner With LCD Display - Center Finding Beam Finder And Sound Warning For Wood, AC Wire, And Metal Studs (Black/Silver)
24 Review
π CAMWAY 6 Inch Digital Caliper with LCD Display, Electronic Vernier Caliper, 150mm Stainless Steel Feeler Gauge, Plastic Digital Caliper Set for Zero Setting Inside/Outside Diameter, Depth, and Step Measurement Tool
3 Review
π Johnson Level and Tool 400EM-S 12-Inch Heavy Duty Metal Combination Square for Professionals, with Inch/Metric Measurements, Silver - 1 Square
8 Review
TV bracket Kromax DIX-18 black
52 Review
π² Johnson RAS-1B Johnny Square: Professional Aluminum Rafter Square, 7'', Silver - Top Quality with 1 Square
8 Review