The modules work well: I was using these to transmit 20 km at 10mW transmit power (with line of sight, on a quiet frequency). Their power consumption is low enough that I didn't bother to measure it properly, but in my application it is well below 1mA when not transmitting.
The modules lack a marker on top to know whether they have been installed properly. The pins are only marked on the underside; if the module doesn't work after installation there is no visual way to check it wasn't accidentally installed backwards.
The modules are almost pin compatible with RFM95 units, which is handy if you want to play around with a Moteino or some such. The SPI pins match, but I did have to put in some custom wires to hook up the Busy and DIO lines.
I ordered some 433 MHz units. I was quite excited when they arrived less than two weeks later, but disappointed to see that they had shipped 860 MHz units, which were no good to me.
When I contacted customer support, I was advised by Helen that the 433 MHz units use the SX1268 module and do not come with a TCXO. At that time, this was not mentioned in the description (I'm glad to see they have now updated it). I explained that I needed modules with a TCXO, and would not have bought these modules had that been advertised, Helen organised to send me some custom 433MHz modules with TCXOs as a replacement. The replacement modules were shipped quickly and worked as advertised, which I thought was great customer service. However, I was requested to send back the incorrect modules on my own dime, via registered mail. I did not comply with that and sent them first class mail instead (I only ordered 6 modules - at a cost of $30. To return them by registered mail would have cost more than the order!).
I had a technical question about the TCXO modules used in these*. I twice contacted customer support to request the information; the first time I was sent a datasheet which did not include the required information, the second time I did not receive any response.
For 433MHz, I would recommend the Dorji SX1268 modules over these ones; I trialled some of those and have now changed my design to use them rather (sadly they are not pin compatible, but it wasn't too hard to change).
* If using the module in the low power Receive Duty Cycle mode, an important parameter is how long the TCXO takes to stabilise.
Received 433 Mhz foldable antenna in good packaging condition. ordered on 11 Jan & received on 2 feb in bangalore. Support from Tindie team was very good . Though I request them for future orders them must give the option of different shipping partners so that customer can choose the option.
These boards are advertised as having "12.5/25 kHz bandwidth selection". This is not true: they appear to be preset for 12.5 kHz, as 5 kHz deviated signal drop out on voice peaks. Additionally, the CTCSS deviation is 1.2 kHz & the total voice+CTCSS deviation is 3.8 kHz. The squelch is too tight even on level 1, & if you program level 0 for squelch & CTCSS decode, the receiver stops working, so it is not possible to use only CTCSS (no noise squelch). Also, when programmed for CTCSS decode, CTCSS is only required to open the squelch. If CTCSS is then removed (such as when the desired station stops transmitting & there is another station without CTCSS still transmitting on the same channel), the receiver stays open. This is improper operation: the receiver CTCSS squelch should close as soon as CTCSS stops being detected.