--- product_id: 179478623 title: "24V 40VA Plug in Transformer, UL Listed (1Pack, Without Screw Holes)" brand: "hotop" price: "S$55" currency: SGD in_stock: true category: "Hotop" url: https://www.desertcart.sg/products/179478623-24v-40va-plug-in-transformer-ul-listed-1pack-without-screw store_origin: SG region: Singapore --- # 24V AC output power LED power indicator 40VA capacity for stable performance 24V 40VA Plug in Transformer, UL Listed (1Pack, Without Screw Holes) **Brand:** hotop **Price:** S$55 **Availability:** ✅ In Stock ## Summary > ⚡ Power your smart home like a pro — no compromises, just seamless energy! ## Quick Answers - **What is this?** 24V 40VA Plug in Transformer, UL Listed (1Pack, Without Screw Holes) by hotop - **How much does it cost?** S$55 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/179478623-24v-40va-plug-in-transformer-ul-listed-1pack-without-screw) ## Best For - hotop enthusiasts ## Why This Product - Trusted hotop brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Safety First:** Auto-resetting PTC fuse ensures stable, worry-free operation with UL listing - • **Smart Compatibility:** Seamlessly works with Ring, Nest, Ecobee, Honeywell & Sensi smart thermostats and doorbells - • **Instant Status Check:** Built-in LED green power indicator keeps you informed at a glance - • **Plug & Play Convenience:** Compact plug-in design with positive/negative/screw terminals for easy installation - • **Power Up Without Limits:** Reliable 24V 40VA output eliminates underpower issues for your smart devices ## Overview The Hotop 24V 40VA Plug-in Transformer is a UL-listed, compact power solution designed to replace underpowered transformers for smart home devices. Featuring a stable 24V AC output, 40VA capacity, auto-resetting PTC fuse protection, and a handy LED power indicator, it ensures reliable and safe operation. Compatible with leading smart doorbells and thermostats including Ring, Nest, Ecobee, Honeywell, and Sensi, this transformer delivers hassle-free, plug-and-play installation for the modern connected home. ## Description 24V 40VA Plug in Transformer, UL Listed (1Pack, Without Screw Holes) | Compatible with Ring, Nest, Sensi Doorbell & Thermostats, PTC Fuse Protection, LED Power Indicator - desertcart.com ## Features - Eliminate doorbell/ thermostat underpower hassle: 24V 40VA plug-in transformer replaces and upgrades underpowered transformer with this 24V AC transformer - Specification: input voltage: 120 VAC, 60Hz; Output voltage: 24V, 40VA - Safe and stable: auto-resetting (PTC) fused secondary, LED green power indicator, positive/ negative/ screw terminals - Universal compatibility: this 24v transformer is compatible with Ring Video Doorbell, Ring Video Doorbell 2, Ring Video Doorbell Pro, Nest Skybell doorbell - Also compatible with Nest, Ecobee, Honeywell, and Sensi smart thermostats, and other devices that require constant 24-volt power for operation; ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B083R621RV | | Best Sellers Rank | #20,713 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #12 in Door Bell Transformers | | Brand | Hotop | | Brand Name | Hotop | | Current Rating | 1.5 A | | Customer Reviews | 4.5 out of 5 stars 2,276 Reviews | | Item Dimensions D x W x H | 2.13"D x 2.56"W x 3.94"H | | Item Highlight | Compatible with Ring, Nest, Sensi Doorbell & Thermostats, PTC Fuse Protection, LED Power Indicator | | Manufacturer | Hotop | | Maximum Frequency | 60 hertz | | Minimum Frequency | 60 hertz | | Model | PS D40 | | Mounting Type | Wall Mount | | Number of Items | 1 | | Number of Packs | 1 | | Part Number | PS D40 | | Power Source | Corded Electric,Plug | | Product Dimensions | 2.13"D x 2.56"W x 3.94"H | | Specification Met | UL | | UPC | 796168988969 | | Unit Count | 1 Count | ## Product Details - **Brand:** Hotop - **Current Rating:** 1.5 A - **Mounting Type:** Wall Mount - **Power Source:** Corded Electric,Plug - **Product Dimensions:** 2.13"D x 2.56"W x 3.94"H ## Images ![24V 40VA Plug in Transformer, UL Listed (1Pack, Without Screw Holes) - Image 1](https://m.media-amazon.com/images/I/61YFD+Gn2UL.jpg) ## Available Options This product comes in different **Number Of Items, Style** options. ## Frequently Bought Together - Hotop 1 Pack 24 Volt Transformer, 40 VA AC Transformer Plug in with PTC Fuse Competible with All Versions of Ring Doorbell and Thermostat, Compatible with Nest, Ecobee, Sensi, Honeywell, 24V Adapter - Syston 18/2 Thermostat Doorbell HVAC Heating Control Cable Wire, 18 AWG 2 Conductors 100% Solid Copper Conductors CL3R/FT4/CMR Riser-Rated, UV Resistant RoHS for Low Voltage Applications Use - Syston 18/4 Thermostat Doorbell HVAC Heating Control Cable Wire, 100% Solid Copper Conductors CL3R/FT4/CMR Riser-Rated UL/ETL Listed, UV Resistant RoHS for Indoor/Outdoor Low Voltage Applications Use --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sg/products/179478623-24v-40va-plug-in-transformer-ul-listed-1pack-without-screw](https://www.desertcart.sg/products/179478623-24v-40va-plug-in-transformer-ul-listed-1pack-without-screw) --- *Product available on Desertcart Singapore* *Store origin: SG* *Last updated: 2026-10-02*